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unit27 - Unit 27 MODAL VERBS Modal verbs are...

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Unit 27: MODAL VERBS Modal verbs are auxiliaries (Unit 3). They never change form. They show what we think or feel about the lexical verb (Unit 3) in the sentence. The important modals are: can could may might will would shall should must 1 With verb formation Put the modal verb before any other verbs. The next verb is always base form (Unit 14). a BEFORE ONE-WORD VERB FORMATIONS MODAL + BASE FORM He can play the piano very well. The journey might be uncomfortable. NOTICE: Modals do not have an –s form and we never use an –s form for the next verb. We say: He might come NOT mights come or might comes b BEFORE CONTINUOUS FORMATION (UNIT 17) MODAL be -ing FORM I will be arriving tomorrow. She must be learning Arabic. NOTICE: Always use be after a modal NOT am, is, are, was or were. c BEFORE PERFECT SIMPLE FORMATIONS (UNIT 24.1) MODAL have PAST PARTICIPLE He may have got lost. They should have arrived by now. d BEFORE PERFECT CONTINUOUS FORMATIONS (UNIT 24.2) MODAL have been -ing FORM She could have been watching.
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