The definition of “auxiliary” is to provide supplementary or additional help and support. An auxiliary verb therefore is a verb which provides support or help to the main verb. They are used together with a main verb to add extra meaning to a sentence or to add information that is not given by the main verb. They can give tense, mood or voice to the sentence.
Auxiliary verbs include the verbs;
These can all act as an auxiliary verb or as a main verb, and they are all irregular verbs.
Other auxiliary verbs include the modals. Modal verbs are auxiliary verbs and are often called modal auxiliaries. Unlike other auxiliary verbs modals only exist in their helping form; they do not stand alone as a main verb.
The modal verbs are:-
There are a few other auxiliary verbs which are in dispute, these include
One of the most important aspect of auxiliary verbs is that they help to fomr a negative.
By adding an auxiliary verb the sentence can make sense.
The verb forms of be and have help in constructing different tenses. They are used to form the perfect, continuous and perfect continuous tenses.
Perfect Continuous Tense
“Be” is also used to form the passive voice
The auxiliary verb “Do” is always followed by the infinitive form. It is used in negative sentences and to form questions. It is often used as a way of emphasizing something.
Used to emphasise
Used in negative sentences:
Used in questions: