• English grammar
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  • 1 English alphabet
  • 2 English pronunciation and phonetics [0/3]
  • 3 English articles [0/9]
  • 4 English pronouns [0/39]
  • 4.1 English personal pronouns [0/3]
  • 4.2 English impersonal pronouns (it, there, ...) [0/4]
  • 4.3 English object pronouns [0/3]
  • 4.4 English possessive pronouns [0/5]
  • 4.5 English reflexive pronouns [0/4]
  • 4.6 English reciprocal pronouns [0/4]
  • 4.7 English demonstrative pronouns [0/3]
  • 4.8 English relative pronouns [0/4]
  • 4.9 English indefinite pronouns [0/5]
  • 4.10 English interrogative pronouns [0/4]
  • 5 English nouns [0/16]
  • 6 English adjectives [0/38]
  • 6.1 Adjectives of quality in English [0/4]
  • 6.2 Demonstrative adjectives in English [0/4]
  • 6.3 Possessive adjectives in English [0/4]
  • 6.4 Quantity adjectives in English [0/4]
  • 6.5 Interrogative adjectives in English [0/4]
  • 6.6 Numeral adjectives in English [0/8]
  • 6.7 Comparatives and superlatives [0/10]
  • 7 English adverbs [0/18]
  • 7.1 Position of adverbs in English [0/2]
  • 7.2 Adverbs of manner in English [0/2]
  • 7.3 Adverbs of place in English [0/2]
  • 7.4 Adverbs of time in English [0/2]
  • 7.5 Adverbs of quantity in English [0/2]
  • 7.6 Adverbs of frequency in English [0/2]
  • 7.7 Adverbs of degree in English [0/2]
  • 7.8 Adverbs of probability and certainty in English [0/2]
  • 7.9 Adverbs of opinion and observation in English [0/2]
  • 8 English prepositions [0/12]
  • 9 English verbs [0/122]
  • 9.1 Present tenses in English [0/29]
  • Fill in the correct present tense in English (Score -/-)Free
  • Exercise about all present tenses in English (Score -/-)Free
  • Mixed present tenses exercise in English (Score -/-)Free
  • Practice all the English present tenses (Score -/-)Free
  • 9.1.1 Present simple tense in English [0/5]
  • 9.1.2 Present continuous tense in English [0/4]
  • 9.1.3 Present simple vs present continuous in English [0/4]
  • 9.1.4 Present perfect tense in English [0/4]
  • 9.1.5 Present perfect continuous tense in English [0/4]
  • 9.1.6 Difference past simple and present perfect in English [0/4]
  • 9.2 Past tenses in English [0/20]
  • 9.3 Future tenses in English [0/21]
  • 9.4 Auxiliary verbs in English [0/9]
  • 9.5 Present participle in English [0/3]
  • 9.6 Past participle in English [0/3]
  • 9.7 Modal verbs in English [0/11]
  • 9.8 Phrasal verbs in English [0/3]
  • 9.9 Regular verbs in English [0/3]
  • 9.10 Irregular verbs in English [0/3]
  • 9.11 Gerund (-ing form) in English [0/8]
  • 9.12 Infinitive verbs in English [0/3]
  • 9.13 Imperative in English [0/2]
  • 9.14 Reported speech in English [0/2]
  • 9.15 Active and passive voice in English [0/2]
  • 10 English conditionals [0/20]
  • English indefinite articles

    Exercises

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    1. Indefinite articles exercises Score -/-
    2. "A" and "an" articles exercises Score -/-
    3. Indefinite articles worksheet - Drag and drop Score -/-

    What are indefinite articles?

    Indefinite articles are used to introduce a noun or noun phrase. They indicate that the noun is a general or unknown one rather than a specific one. The indefinite articles are "a" and "an".

    Indefinite articles examples

    • Do you want a glass?
    • I want to leave a tip.
    • She needs an advice.
    • We want to hire an assistant. 

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    The article "a"

    The article "a" is placed in front of singular and countable nouns. We use this article prior nouns that begin with a consonant. It is often used prior professions, expressions of time, and to refer to what category or a family something or someone belongs to.  

    Example:

    • She is a bodyguard.
    • I go there twice month.
    • Despite popular belief tomato is actually a fruit.
    • He is a Getty, as far as I know. 

    The article "an"

    The article "an" as the article "a" is placed in front of singular and countable nouns. It is always used for something that is mentioned either for the first time or it is unknown to the speaker. It is used when the noun after it begins with a vowel or with a silent "h".

    Example:

    • Prince Harry's girlfriend is an American.
    • It is an honor to present you to my partner. 
    • I would love to visit an elephant sanctuary when I go to Thailand. 

    Grammar exceptions

    The general rule of the article "an" is that is used before words beginning with a vowel. However, there are several exceptions to the rule. When the noun begins with "u", "ew" and "eu" and the projected sound of it sounds like "you" we must use the article "a". The exception is also valid when the word "one" is placed prior the noun.

    Example:

    • She is a European. 
    • I want to go to university in France.
    • You only need to book one-way ticket.