Perhaps a good night's rest would have given him a better result. ( What is the verb or verb phrase)

would have given.

Explanation:

A verb phrase is a phrase that includes a main verb, modal and an auxiliary verb. The pattern usually follows first with a modal then an auxiliary verb and finally the main verb. In fact, in a verb phrase, the main verb should always come last.

Here, the verb phrase is "would have given" as it includes a modal which is 'would', an auxiliary verb which is 'have' and the main verb which is 'given'. In some cases, there can two auxiliary verbs in a verb phrase such as 'would (have been) giving' or 'might (have been) dancing'.

The book describes the Greasers as having all different types of hair color, some even having blonde hair including Dally whose hair is described as almost white, but the movie chooses to give more distinction between the Greasers and the Socs by giving the Greasers dark black hair and the Socs lighter hair colors.