Here's an example:
* "He will have been studying for hours by the time you arrive."
Here's the breakdown:
* Will have been are the helping verbs.
* Studying is the main verb.
Common Combinations of Helping Verbs
* will + have + been (future perfect progressive)
* would + have + been (past conditional progressive)
* should + have + been (past conditional progressive)
* may + have + been (past modal progressive)
* might + have + been (past modal progressive)
Keep in Mind
* The order of helping verbs is important.
* The choice of helping verbs depends on the tense and mood of the verb phrase.
Let me know if you have any other questions about verb phrases!