Auxiliary Verbs - Chart
Auxiliary Verbs
| Forms of to do | Forms of to have | Forms of to be | Modals |
| (used with base form of the next verb in the string) | (used with past participle form of the next verb in the string) | (used with present or past participle of the next verb in the string) | (used with base form of the next verb in the string) |
| do, does, did | have, has, had | am, is, are, was, were | can, will, shall, could, would, should |
| be, being, been | may, might, must |
Note the words in the shaded area of the chart may sometimes act as single-word verbs.
