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表示肯定的推測,一般用于肯定句中。考點五:情態(tài)動詞表示推測的用法:一、“情態(tài)動詞+動詞原形”表示對現(xiàn)在的推測。More and more trees must be planted in 。You needn’t get up so early every 。考點四:情態(tài)動詞的被動語態(tài)含有情態(tài)動詞的被動語態(tài)的結(jié)構(gòu)為:情態(tài)動詞+ be + done (動詞的過去分詞)。5. shouldn’t表示不應(yīng)該。(2)needn’t + have+動詞的過去分詞,表不需要完成但已完成的動作,暗含時間或精力上的浪費。4.(1)needn’t意為“不必”?!?2) mustn’t也可用于以may表示要求時的否定回答中。He mustn’t leave his 。2. may的否定式為may not,譯成“可能不”,He may not be at 。can’t help doing禁不住,情不自禁can’t wait to do something迫不及待地要做…She can’t help 。May I e in ? 我可以進來嗎? No, you mustn’t. / can’,你不能。(2)當(dāng)句子表推測時,用can’t表達不可能,He can’t be ill. He is playing chess with ,他正和Tom下棋呢。其回答方式有以下幾種:Yes, please .、 All right .、 No, thank you.5. would you…的回答方式有以下幾種:Yes, I will. (No, I won’t.)、 Sure . (I’m sorry , I can’t.)、 All right/ OK/ With pleasure. 、Certainly. (No, thank you .) 、Yes, please.【例題】—Would you do me a favor and pass on my thanks to Lily?—________. ’s right pleasure doesn’t matter trouble【解析】“對了”,“樂意效勞”, “沒關(guān)系” “不費事”。Could you do me a favor ? 你能幫我個忙嗎?—Could I use your pen?我能用一下你的鋼筆嗎?—Yes, you 。You had better not give the book to 。ll stay with you and help you.10. had better的用法:had better意為“最好”,沒有人稱的變化,后面接不帶to的不定式,其否定形式為:had better not。(一定不能說there will have)There are many students in our school.→There will be many students in our school. There will be a sports meeting next week.一定不能說:There will have a sports meeting next week.will與be going to do something區(qū)別:①. be going to表示近期、眼下就要發(fā)生的事情,will表示的將來時間則較遠一些,He is going to write a letter tonight. He will write a book one day.②. be going to表示根據(jù)主觀判斷將來肯定發(fā)生的事情,will表示客觀上將來勢必發(fā)生的事情。注意:will在there be句型中的形式及其句式變換。)9. will的用法:will表示意愿、意志、打算,可用于多種人稱。You should have finished your 。We should protect the 。Would you like a cup of tea? Would you like to go and see her?因此,如果我們說:“去游泳好嗎?”英語中可有這樣幾種表達法:Shall we go for a swim? Let39。Why not meet at the school gate at eight? Why don39?!癢hy not...?”實際上是“Why don39。s go for a walk after supper.(2).用“What/How about...?”來提出建議;about后接名詞或動詞ing形式。s do...”來提出建議。7. shall的用法:shall表示征求對方意見(多用于第一、三人稱),Shall we go out for a walk?我們出去散步好嗎?在英語中,我們可以用其他多種方式提出我們的建議或征求對方意見。