I know that two verbs joined by a conjunction and referring to the same subject make a compound verb:
- The dog ran and jumped in the park.
- I read a book and listened to music while I waited.
- The boys whispered and giggled as their aunt scolded them.
And I know that to be, to have, or a modal verb paired with a verb is an auxiliary verb:
- My mother is sleeping.
- The dog had bitten the mailman.
- You should watch this movie.
But what about when an infinitive follows a conjugated verb? Are the following sentences compound verbs, auxiliary verbs, or something else?
- He decided to give them a tour.
- I need to go to the store.
- Many older people prefer to write cursive.
Verb
and/orVerb
. What you're describing is what's called a complement clause governed by a main verb. Complements are much more important than compounds. We say that decide has an infinitive complement clause (for him) to give them a tour and need has an infinitive complement clause (for me) to go to the store, for instance. There are four kinds of complement clause, and infinitive clause is one of them. Which one gets used depends on what the main verb is.