• 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]
  • This chapter will discuss the auxiliary verbs in English. There are many auxiliary verbs in English, for example 'to be', 'to do', 'to have', 'will', and 'would'. 

    Definition and usage of auxiliary verbs

    An auxiliary verb is a verb that can never be alone in the sentence, because it adds an extra meaning to another verb in the sentence. There have to be two or more verbs in the sentence. 

    Situation Example
    Auxiliary verbs of modality
    • She will make the invitations. 
    • He will wait for you at the station. 
    Auxiliary verbs of time
    • She is talking with him. 
    • They had walked to the supermarket. 
    To make a question and negative sentences, and expressing emphasis
    • Do you want a sandwich?
    • We don't talk a lot anymore. 
    Passive auxiliary verbs
    • The house was built.
    • The letter was typed by the student. 

    Auxiliary verbs of modality

    The auxiliary verbs of modality are modal verbs that give an attitude towards another verb. Some of these modal verbs are 'can', 'may', 'must', 'shall', and 'will'. 

    • I can sing very well. 
    • They will buy a bike. 

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    Auxiliary verbs of time

    The auxiliary verbs of time in English are used for the present perfect, past perfect, present continuous, past continuous, future tenses. In English the verbs 'to be', 'to have', and 'will' are used as auxiliary verbs of time.

    • I have watched a movie. 
    • She is playing a game with him. 

    Auxiliary verbs to make a question and negative sentences, and expressing emphasis

    The auxiliary verb that is used to make a question or negative sentence or that is used to put emphasis on something, is the verb 'to do'. 

    • Do you like to play soccer?
    • I do like to go out for dinner!

    Passive auxiliary verbs

    For passive sentence the auxiliary verb 'to be' is used. The passive auxiliary verb is used when it is not important who performed the action. It focuses on the action and not the subject. 

    • The bike is bought. 
    • The house was built.  

    Take a look at the subchapters to find out how to conjugate 'to be', 'to have''to do', the difference between 'will' and 'shall' and the verb 'would'.  

    Train your skills by doing the exercises below!

    Next lessons

    1 Conjugation of the auxiliary verb to be in English Learn all about the conjugation of the verb 'to be'.
    2 Conjugation of the auxiliary verb to have in English Learn all about the conjugation of the verb 'to have'.
    3 Conjugation of the auxiliary verb to do in English Study all the conjugations of the verb 'to do' in English here.