1. Helping Verbs

2. Their Function
Helping verbs "help" or combine with the main verb (which has the real meaning).

3. “To Be” Helping Verbs Am Is
Are
Was
Were Be
Being
Been

4. “To Have” Helping Verbs
Has
Had

5. “To Do” Helping Verbs Do
Does
Did

6. Helping Verbs
Could
Would
Should

7. Helping Verbs
Will
Can
Shall

8. Helping Verbs
May
Might
Must

9. Keep in Mind…
Not every sentence will have a helping verb with the main verb.
When you see an "ing" verb such as "running", look for a helping verb also.
Sometimes there is another word which separates the helping verb from the main verb. Example: "not" as in: The boy could not find his socks. Helping verb: could Main verb: find.
A sentence may contain up to three helping verbs to the main verb. Example: The dog must have been chasing the cat. Helping verbs: must, have, and been; main verb: chasing.