You mention one thing that you have never seen before.
Complete the sentence: 'Have you ever seen ___ volcano?'
Elige una opción para comprobar tu respuesta.
Respuesta correcta: A)a
💡 Explicación
The indefinite article a or an introduces something new, while the definite article the points to something already identified.
Ver respuesta
Respuesta correcta: A)a
A)aCorrect. 'A volcano' introduces a single thing for the first time, which is exactly what the indefinite article does.
B)someWrong. 'Some' would not normally be used with a singular countable noun in this question.
C)anWrong. 'An' is required before a vowel sound and volcano begins with a consonant sound.
D)theWrong. 'The volcano' assumes the listener already knows which volcano is meant.
💡 Explicación
The indefinite article a or an introduces something new, while the definite article the points to something already identified.
Pregunta 2
Pregunta 2 · D4Bloom: Remember
You mention one thing for the first time, and its name starts with a vowel sound.
Choose the correct article before the word 'orange'.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: B)an orange
💡 Explicación
The article is decided by the initial sound of the following word, not by the letter, which is why an hour and a university both take a.
Ver respuesta
Respuesta correcta: B)an orange
A)a orangeWrong. 'A orange' would be correct before a consonant sound but not before this vowel sound.
B)an orangeCorrect. The choice between a and an depends on the sound, and orange begins with a vowel sound.
C)some orangeWrong. 'Some' is normally used with plural or uncountable nouns and not with a single countable item.
D)the orangeWrong. 'The orange' presupposes a specific orange already known to the listener.
💡 Explicación
The article is decided by the initial sound of the following word, not by the letter, which is why an hour and a university both take a.
Pregunta 3
Pregunta 3 · D4Bloom: Remember
You introduce a general concept.
Complete the sentence: '___ water boils at one hundred degrees Celsius.'
Elige una opción para comprobar tu respuesta.
Respuesta correcta: C)Water
💡 Explicación
General statements about uncountable nouns such as water take no article at all, which is one of the commonest examination traps.
Ver respuesta
Respuesta correcta: C)Water
A)A waterWrong. 'A water' would treat the noun as countable, which it is not.
B)The waterWrong. 'The water' refers to a specific body of water already identified in the context.
C)WaterCorrect. When a statement is true of all instances of a noun, English normally omits the article altogether.
D)Some watersWrong. 'Some waters' pluralises an uncountable noun, which is not permitted here.
💡 Explicación
General statements about uncountable nouns such as water take no article at all, which is one of the commonest examination traps.
Pregunta 4
Pregunta 4 · D5Bloom: Apply
A classmate asks about something you do not know.
Choose the question with the correct article.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: D)What time does the film start?
💡 Explicación
A question about a mutually identified item takes the definite article, whereas asking about any instance of a class would take an indefinite one.
Ver respuesta
Respuesta correcta: D)What time does the film start?
A)What time does film start?Wrong. Leaving the article out makes the sentence ungrammatical for a countable noun.
B)What time does the a film start?Wrong. The two articles together contradict each other and cannot modify the same noun.
C)What time does a film start?Wrong. 'A film' would introduce a different film each time, which is not the meaning of the question.
D)What time does the film start?Correct. 'The film' refers to a specific film that both speakers are discussing, so the definite article is required.
💡 Explicación
A question about a mutually identified item takes the definite article, whereas asking about any instance of a class would take an indefinite one.
Pregunta 5
Pregunta 5 · D5Bloom: Apply
A description refers to something unique in the world.
Complete the sentence: 'The sun rises in the ___.'
Elige una opción para comprobar tu respuesta.
Respuesta correcta: A)east
💡 Explicación
Directions are unusual because they take the definite article when used as noun phrases, unlike most uncountable general references.
Ver respuesta
Respuesta correcta: A)east
A)eastCorrect. In geographical expressions such as 'in the east', the definite article precedes the direction word.
B)east'sWrong. A possessive ending cannot be attached to a direction word in this phrase.
C)an eastWrong. 'An east' is not a standard expression for a direction.
D)the eastWrong. Omitting the article is unusual in this fixed geographical construction.
💡 Explicación
Directions are unusual because they take the definite article when used as noun phrases, unlike most uncountable general references.
Pregunta 6
Pregunta 6 · D5Bloom: Apply
A speaker mentions meals in general.
Choose the sentence that correctly refers to meals as a class.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: B)Breakfast is usually served at seven.
💡 Explicación
Meal names such as breakfast, lunch and dinner take the definite article only when referring to a specific meal, not when used generally.
Ver respuesta
Respuesta correcta: B)Breakfast is usually served at seven.
A)The breakfast is usually served at seven.Wrong. 'The breakfast' refers to a particular meal already mentioned.
B)Breakfast is usually served at seven.Correct. 'Breakfast' used in this general sense takes no article, which is the standard pattern for meal names.
C)Breakfasts are usually served at seven in Peru.Wrong. Pluralising meal names in this sense is not standard English and would refer to individual portions.
D)A breakfast is usually served at seven.Wrong. 'A breakfast' counts a single instance rather than referring to the meal as a general category.
💡 Explicación
Meal names such as breakfast, lunch and dinner take the definite article only when referring to a specific meal, not when used generally.
Pregunta 7
Pregunta 7 · D5Bloom: Apply
A sentence mentions a hospital, and the speaker wants to generalise.
Choose the sentence that uses the correct article for a general statement about hospitals.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: C)Hospitals usually have a qualified staff.
💡 Explicación
General plural references to institutions take no article, whereas specific institutions referred to individually take the definite article.
Ver respuesta
Respuesta correcta: C)Hospitals usually have a qualified staff.
A)A hospitals usually have a qualified staff.Wrong. 'A hospitals' is impossible because the indefinite article cannot modify a plural noun.
B)The hospitals usually have a qualified staff.Wrong. 'The hospitals' points to particular hospitals already identified.
C)Hospitals usually have a qualified staff.Correct. A general statement about all hospitals takes the plural noun without an article.
D)Hospital usually have a qualified staff.Wrong. 'Hospital' without a determiner and with a plural verb is ungrammatical here.
💡 Explicación
General plural references to institutions take no article, whereas specific institutions referred to individually take the definite article.
Pregunta 8
Pregunta 8 · D6Bloom: Analyze
A grammar handbook explains when the zero article is used.
Choose the statement that best describes the zero article.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: D)It is used with uncountable nouns in general statements and with many fixed expressions and proper names.
💡 Explicación
The zero article is defined by what it excludes, so describing it accurately requires covering both its genuine uses and the cases it cannot cover.
Ver respuesta
Respuesta correcta: D)It is used with uncountable nouns in general statements and with many fixed expressions and proper names.
A)It is used only with plural nouns and never with singular ones.Wrong. The zero article is also used with singular uncountable nouns and with some singular proper names.
B)It is never used with proper names in English.Wrong. Many proper names, such as city names and the names of rivers, normally take no article at all.
C)It is used with any singular countable noun that has not been mentioned before.Wrong. A singular countable noun requires an article; the indefinite article is exactly what this rule rules out.
D)It is used with uncountable nouns in general statements and with many fixed expressions and proper names.Correct. This accurately lists the main contexts, since the zero article covers general uncountables, fixed phrases and many proper names.
💡 Explicación
The zero article is defined by what it excludes, so describing it accurately requires covering both its genuine uses and the cases it cannot cover.
Pregunta 9
Pregunta 9 · D6Bloom: Analyze
An editor checks a sentence about a country.
Choose the version with the correct article before the country name.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: A)Peru is in the west of South America.
💡 Explicación
Country names usually take no article, though a few such as the Netherlands and the Philippines are well-known exceptions.
Ver respuesta
Respuesta correcta: A)Peru is in the west of South America.
A)Peru is in the west of South America.Correct. Most country names take the zero article, so no article is needed before Peru.
B)Peru are in the west of South America.Wrong. The subject is singular, so the verb must be 'is' rather than 'are'.
C)A Peru is in the west of South America.Wrong. 'A Peru' would imply that Peru were one country among several unnamed ones.
D)The Peru is in the west of South America.Wrong. 'The Peru' is not used; the article does not appear with the name of this country.
💡 Explicación
Country names usually take no article, though a few such as the Netherlands and the Philippines are well-known exceptions.
Pregunta 10
Pregunta 10 · D6Bloom: Apply
A grammar task tests a fixed expression that includes an article.
Choose the sentence that uses the correct article in a fixed expression.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: B)I go to school by bus every day.
💡 Explicación
Fixed expressions such as go to school, go to bed and go to church describe activities rather than places and never take an article.
Ver respuesta
Respuesta correcta: B)I go to school by bus every day.
A)I go to the school by bus every day.Wrong. 'The school' would refer to a specific building and would change the meaning entirely.
B)I go to school by bus every day.Correct. 'Go to school' is a fixed expression meaning to attend school as a pupil, and it takes no article.
C)I go to school on bus every day.Wrong. 'On bus' is not a valid prepositional phrase; transport by bus uses 'by'.
D)I go to a school by bus every day.Wrong. 'A school' would introduce one unspecified school, which is not what the expression means.
💡 Explicación
Fixed expressions such as go to school, go to bed and go to church describe activities rather than places and never take an article.
Pregunta 11
Pregunta 11 · D6Bloom: Apply
A classmate asks about your family.
Complete the sentence: 'I have ___ brother and ___ sister.'
Elige una opción para comprobar tu respuesta.
Respuesta correcta: C)a; a
💡 Explicación
Each singular countable noun needs its own determiner, so a repeated noun in the same sentence takes the article again.
Ver respuesta
Respuesta correcta: C)a; a
A)an; aWrong. 'An brother' is incorrect because brother begins with a consonant sound.
B)a; anWrong. 'An sister' is incorrect because sister begins with a consonant sound.
C)a; aCorrect. The indefinite article is used before both nouns because brother and the first mention of sister are both new information beginning with consonants.
D)the; aWrong. 'The brother' would imply a brother already identified, which the sentence does not establish.
💡 Explicación
Each singular countable noun needs its own determiner, so a repeated noun in the same sentence takes the article again.
Pregunta 12
Pregunta 12 · D6Bloom: Apply
A sentence refers to a sequence of institutions.
Choose the sentence that correctly uses each and every with singular nouns.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: D)Each of the candidates and every member of the panel were interviewed.
💡 Explicación
Each and every behave like singular determiners for the purposes of subject-verb agreement, which is a standard examination point.
Ver respuesta
Respuesta correcta: D)Each of the candidates and every member of the panel were interviewed.
A)Each of the candidates and every of the panel were interviewed.Wrong. 'Every of the panel' is not a valid construction, because every cannot be followed by of.
B)Each of the candidate and every members of the panel were interviewed.Wrong. 'Each of the candidate' needs the plural noun, and 'every members' wrongly pluralises after every.
C)Each of the candidates and every member of the panel was interviewed.Wrong. A plural verb is used where both subjects are grammatically singular, so the agreement is wrong.
D)Each of the candidates and every member of the panel were interviewed.Correct. 'Each of' and 'every' are both singular determiners, so the singular verb 'was' is the correct agreement.
💡 Explicación
Each and every behave like singular determiners for the purposes of subject-verb agreement, which is a standard examination point.
Pregunta 13
Pregunta 13 · D6Bloom: Apply
A speaker compares two ways of travelling to school.
Choose the sentence that correctly uses the zero article with a mode of transport.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: A)I go to work by bicycle on Tuesdays.
💡 Explicación
By plus a mode of transport refers to the activity rather than to a vehicle, so it follows the same pattern as go by train.
Ver respuesta
Respuesta correcta: A)I go to work by bicycle on Tuesdays.
A)I go to work by bicycle on Tuesdays.Correct. Modes of transport such as bicycle, bus and train take the zero article in the phrase 'by bicycle'.
B)I go to work by a bicycle on Tuesdays.Wrong. 'By a bicycle' also refers to a specific or unspecified bicycle, not to the general activity.
C)I go to work by the bicycle on Tuesdays.Wrong. 'By the bicycle' would refer to a particular bicycle rather than the mode of transport.
D)I go to work on bicycle on Tuesdays.Wrong. 'On bicycle' is not a valid combination of preposition and noun in this meaning.
💡 Explicación
By plus a mode of transport refers to the activity rather than to a vehicle, so it follows the same pattern as go by train.
Pregunta 14
Pregunta 14 · D7Bloom: Analyze
An exercise tests articles before abstract nouns.
Choose the sentence that correctly uses the definite article with an abstract noun.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: B)Music is important in Peruvian culture.
💡 Explicación
Abstract and mass nouns take the zero article in general statements but the definite article when a specific instance is intended.
Ver respuesta
Respuesta correcta: B)Music is important in Peruvian culture.
A)The music is important in Peruvian culture.Wrong. 'The music' would refer to a particular piece or body of music already under discussion.
B)Music is important in Peruvian culture.Correct. When music refers to the whole field or activity in general, English takes the zero article.
C)Musics are important in Peruvian culture.Wrong. 'Musics' pluralises an uncountable noun, which English does not allow here.
D)A music is important in Peruvian culture.Wrong. 'A music' is ungrammatical because music is uncountable and has no plural form.
💡 Explicación
Abstract and mass nouns take the zero article in general statements but the definite article when a specific instance is intended.
Pregunta 15
Pregunta 15 · D7Bloom: Apply
A grammar task tests possessive determiners.
Choose the sentence that correctly uses a possessive determiner.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: C)This is my notebook.
💡 Explicación
English allows only one determiner before a noun, and possessive determiners occupy that single slot on their own.
Ver respuesta
Respuesta correcta: C)This is my notebook.
A)This is a notebook of mine here.Wrong. 'A' cannot be inserted between a possessive determiner and the noun it accompanies.
B)This is the notebook of me.Wrong. 'Of me' reverses the correct order, which requires a noun before of and a pronoun after it.
C)This is my notebook.Correct. 'My' is a possessive determiner that goes directly before the noun without an article.
D)This is my a notebook.Wrong. 'My a notebook' stacks two determiners before one noun, which is not permitted in English.
💡 Explicación
English allows only one determiner before a noun, and possessive determiners occupy that single slot on their own.
Pregunta 16
Pregunta 16 · D7Bloom: Apply
An editor corrects an article error in a paragraph about schools.
Choose the revision with the correct article usage.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: D)The school we attend is the nearest to the city centre.
💡 Explicación
A superlative needs the definite article, and the phrase after the comparative preposition must also be definite for the comparison to make sense.
Ver respuesta
Respuesta correcta: D)The school we attend is the nearest to the city centre.
A)The school we attend is the nearest to the city centre's.Wrong. A possessive ending cannot replace the preposition in a superlative comparison.
B)The school we attend is the nearest to a city centre.Wrong. 'A city centre' would refer to some unspecified centre rather than the one being compared.
C)The school we attend is nearest to the city centre.Wrong. 'Is nearest' omits the article that the superlative requires.
D)The school we attend is the nearest to the city centre.Correct. The superlative takes the definite article, and the comparison is completed with the preposition to plus a definite noun phrase.
💡 Explicación
A superlative needs the definite article, and the phrase after the comparative preposition must also be definite for the comparison to make sense.
Pregunta 17
Pregunta 17 · D7Bloom: Analyze
An exam tests a determiner that indicates a limited quantity.
Choose the sentence that correctly uses a determiner of quantity.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: A)I have a lot of work to do this week.
💡 Explicación
Quantity determiners such as a lot of, a few of and plenty of each occupy the single determiner slot before their noun.
Ver respuesta
Respuesta correcta: A)I have a lot of work to do this week.
A)I have a lot of work to do this week.Correct. 'A lot of' is a quantity determiner that takes an uncountable noun such as work.
B)I have the lot of work to do this week.Wrong. 'The lot of' would refer to a specific known quantity and does not function as a general quantity phrase.
C)I have a lot of many work to do this week.Wrong. 'A lot of many' stacks two quantifiers before a single noun, which is ungrammatical.
D)I have lot of work to do this week.Wrong. 'Lot of' requires the article, since a lot of is a determiner and not a bare noun phrase.
💡 Explicación
Quantity determiners such as a lot of, a few of and plenty of each occupy the single determiner slot before their noun.
Pregunta 18
Pregunta 18 · D8Bloom: Analyze
A semantics exercise examines article use with institution names.
Which statement best describes the article in the sentence 'She has been studying at the university since 2019'?
Elige una opción para comprobar tu respuesta.
Respuesta correcta: B)The university is specific, because it is the one where she is registered, which is why the definite article is used.
💡 Explicación
Definiteness depends on identifiability rather than on whether a name is spelled out, which is why institutions take the.
Ver respuesta
Respuesta correcta: B)The university is specific, because it is the one where she is registered, which is why the definite article is used.
A)The article should be zero because no institution is named in the sentence.Wrong. The zero article is used with general plurals such as universities, not with a single institution the speaker has in mind.
B)The university is specific, because it is the one where she is registered, which is why the definite article is used.Correct. Definite articles are used for institutions whose identity is fixed by context or general knowledge, not only when they are named.
C)The article is wrong because institutions are never referred to with the definite article.Wrong. Institutions are routinely referred to with the definite article whenever they are identifiable.
D)The article should be an indefinite one because a new institution is being introduced.Wrong. An indefinite article would suggest any university rather than the particular one the speaker means.
💡 Explicación
Definiteness depends on identifiability rather than on whether a name is spelled out, which is why institutions take the.
Pregunta 19
Pregunta 19 · D8Bloom: Evaluate
A style task asks for the most economical accurate version.
Which sentence is both grammatical and free of an unnecessary article?
Elige una opción para comprobar tu respuesta.
Respuesta correcta: C)The life of a nurse involves night shifts.
💡 Explicación
Economy in article use means removing the article that general and plural references do not require, without removing those they do.
Ver respuesta
Respuesta correcta: C)The life of a nurse involves night shifts.
A)A life of nurse involves night shifts.Wrong. 'A life of nurse' lacks the article that the singular countable noun nurse requires.
B)The life of a nurse involves the night shifts.Wrong. 'The night shifts' restricts the reference to particular shifts, adding an article the sentence does not need.
C)The life of a nurse involves night shifts.Correct. 'Night shifts' in the general sense takes no article, and 'a nurse' correctly introduces one unspecified member of the profession.
D)The life of the a nurse involves night shifts.Wrong. 'The a nurse' contains two articles before one noun, which is never possible.
💡 Explicación
Economy in article use means removing the article that general and plural references do not require, without removing those they do.
Pregunta 20
Pregunta 20 · D8Bloom: Analyze
An exam tests articles in a sentence with two nouns.
Choose the sentence in which both articles are correct.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: D)The head of the department resigned yesterday.
💡 Explicación
Roles and institutions are singular countable nouns, so each one needs its own determiner and cannot share a single one.
Ver respuesta
Respuesta correcta: D)The head of the department resigned yesterday.
A)The head of the department the resigned yesterday.Wrong. 'The department the resigned' inserts an extra article and leaves the structure with two determiners.
B)Head of the department resigned yesterday.Wrong. 'Head of the department' lacks the article before the singular noun head, which is required.
C)The head of department resigned yesterday.Wrong. 'Of department' lacks the article before a singular countable noun used as a role or institution.
D)The head of the department resigned yesterday.Correct. 'The head' takes the definite article because the role is unique, and 'the department' is also identifiable in the context.
💡 Explicación
Roles and institutions are singular countable nouns, so each one needs its own determiner and cannot share a single one.
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