1.1. ability/ permission / requests Can/could advice will/shall future willingness/ promises and offers / conditional sentences may/ might / could possibility/ permission requests / past of will/ conditional sentences / habits Would/would have must/ mustnt rules/obligation should/shouldn't recommendation/ advice should have/ shouldn t have| regret / criticism needn't/ needn't have lack of obligation may be/might be / must be speculation about the present / can't+be/+ be -ing form may have/ might have/ must have /can't have + past participle/+ been-ing speculation about the past form could have/couldn't have possibility in the past/ criticism Will have future completion
2. semi-modals
2.1. nave to / had to / have got torules/obligation aon t have to/ didn't have to lack of obligation Ought to obligation/advice need to necessity/ instructions/ guidance On t need to / didn't need to | lack of obligation Would like/would like to offers/ invitations/ preferences be able to ability/ infinitive of can
3. RULES
3.1. We use modal ver dify the meaning of the mai verb. They Subject is he, she or it He can go. do not take -s when the are wed by the base form of the verb should leave. . form the negative win modal + not+ the base form You can t Come. fonm questions by inversion: modal + subject + base form May I stop? Semi-modal verbs have some of the characteristics of modals, but not all.
