Primary Auxiliary Verbs
An auxiliary verb is one which helps other verbs to make tenses, passive forms etc. There are two groups – primary auxiliaries and modal auxiliaries. Primary auxiliaries Be, do, have and their various forms are called primary auxiliaries. Be is used with other verbs to make progressive and passive verbs forms. I am writing. He was punished for lying. Do is used to make questions, negatives and emphatic forms of non-auxiliary …
