Auxiliary Verbs

The two types of auxiliary verb are 1.   primary verbs and 2. modal verbs .

Primary Verbs

The primary verbs are :   be* , have , and do which come in different forms.

The five forms of verbs are : present tense, simple past, past participle, present participle and simple present tense

  • V1 is the first form of verb (present tense) Examples: Do, sit, write, use, give
  • V2 is the second form of verb (simple past) Examples: Did, sat, wrote, used, gave
  • V3 is the third form of verb (past participle) Examples: Done, sat, written, used, given
  • V4 is the fourth form of verb (present participle) Examples: Doing, sitting, writing, using, giving
  • V5 is the fifth form of verb (simple present) Examples: Does, sits, writes, uses, gives.
1. Primary Auxiliary Verbs Form to be* to have to do
V1 Simple Present tense am, are, is has do, does
V2 Simple past was, were had did
V3 Past participle been had done
V4 Present participle being has does
V5 -s form (third-person singular) is has does
V6 Present perfect has been / have been
V7 Past perfect had been
V8 Present continuous am being / is being / are being
V9 Past continuous was being / were being

Modal Verbs

2. Modal verbs
will can may shall
would could might should
must ought to used to