情态动词（Modal verbs）本身有一定的词义，表示语气的单词。但是不能独立作谓语，只能和动词原形一起构成谓语。情态动词用在行为动词前，表示说话人对这一动作或状态的看法或主观设想。情态动词虽然数量不多，但用途广泛，主要有下列： can (could), may (might), must, need, ought to, dare (dared), shall (should), will (would)
情态动词 can ; Modal verbs ; Modals
助动词和情态动词 Auxiliaries and modal auxiliaries ; Auxiliary Verb and Modal Verb ; Hilfs-und modal verb ; Auxiliaries and modal verbs
条件从句和情态动词 Conditionals and Modals
情态动词+不定式 I
两个情态动词的用法 Can and Could
情态动词的被动语态 The Passive Modal Auxiliaries ; should be allowed to ; Passive Modals
含情态动词的被动语态 Passive voice of modal verbs
情态动词的形式 The Form of Modal Auxiliaries
是情态动词 should ; Can
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