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.
I share with you the complete list of phrasal verbs I used during 10 days in a row. Now it's your turn to use the same strategy and learn phrasal verbs too Ask your partner what each phrasal verb means.