情態(tài)動詞的語法特征1情態(tài)動詞有一定的意義,表示或暗示某(存儲版)
【正文】 n’t或 don’t have to，做 “不必” , mustn’t表示“禁止，不允許” — Must I finish all assignments at a time? — Yes, you must. No, you needn39。 ? You shall fail if you don’t work harder. （警告） ? He shall have the book when I finish reading it.(允諾 ) ? He shall be punished.(威脅 ) ? 2) should 的用法 ? a. should 表示勸告、建議、命令。本來可以 )。 5. 情態(tài)動詞沒有非謂語形式，即沒有不定式、 分詞等形式。 4. 情態(tài)動詞除 ought和 have外，后面只能接不帶 to的 不定式。 ? Can you wait a moment please? ? Excuse me, could you tell me the way to the station? I wonder if you could help me. ? Could I use your phone? ? Yes, of course. /You can’t. ? Do you think I could borrow your bike. (3) 表示可能性 ,譯為“可能、或許”， can常用于否定句 (意思是 不可能已經(jīng) )和疑問句； could除用于否定句及疑問句外 ,還可用于肯定句 (意思是 那時可能 。 Shall we put off the sports meeting until next month? Shall Tom go there with me tomorrow? ? b. shall 用于第二，第三人稱，表示說話人給對方的命令，警告，允諾或威脅或者法律條文的規(guī)定 。 ? You can go out with your friend but you must e back before 11 at night. ? Must I hand in the exercise today? ? No, you needn’t. ? 注意與 have to 的 區(qū)別。 she left for New York this morning. A. Can。 would When he got older, he _____ never do his homework. Nancy _____ keep talking unless you tell her to shut up. would will shall。 can’ t意 為“不可能”； mustn’ t意為“禁止、一定不 要”； wouldn’ t常表示對現(xiàn)在或?qū)砬闆r 的虛擬； needn’ t意為“沒有必要”。 can表示“可能”，意為“有時天氣可能會相當(dāng)冷”。 can’t D 7. Mike promised his doctor he _____ not drink, and he has never drunk ever since. A. might B. should C. could D. would D 8. — Is there a movie on in the cinema tonight? — There _____ be. I will phone the cinema and find it out. A. might B. should
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