All modal verbs are auxiliary verbs, which means they can only be used with a main verb. Modal verbs cannot be a main verb. They are used to express ideas such as possibility, prediction, speculation, deduction and necessity.
A phrasal verb is a group of words that functions as a verb and is made up of a verb plus a preposition or an adverb (or both). It creates a meaning different from the original verb. There are a lot of phrasal verbs in English! Check out this American English at State graphic to learn six phrasal verbs that all use the verb "come." Can you "come up with" sentences that use these phrasal verbs?