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e way to the museum? I would like to say something about it. will和would用于“勸某人接受……”時,只能用some,不能用any。 It’s funny that they should be confident.(表示輕視) Why should I do that for you?(表示不滿)(4)should后接動詞不定式(不加to)時,若用于肯定句,表示某件事本應(yīng)該完成卻未完成;若用于否定句,則表示某事不該發(fā)生卻發(fā)生了。如: We need three apples. He doesn’t need so many books. 7. ought ought只有一種形式,后面常與to連用,意思是“應(yīng)該”。 Don39。 由 can、may、must構(gòu)成的疑問句 (1) 句式: Can/ May/ Must…Would you show me your picture book?其回答方式有以下幾種:Yes, please. All right. No, thank you. (六)不同情態(tài)動詞的否定意義也不同 1. She can’t help crying.2. may 的否定式為 may not , 譯成“ 可能不”, He may not be at home.3. (1)mustn’t 表示不許, 不可。shouldn’ 表不應(yīng)該You shouldn’t feel so unhappy over such little things. (七)易混淆點(diǎn) 易混點(diǎn)一to兩者表示能力時用法相同, 但 can 只有原形 “can” 和過去式“ could ”兩種形式,在其他時態(tài)中 要用be able to 來表示。can 和 may 均可用來征求意見或許可,意為“可以”, 一般可互換2.常用位置may be may為情態(tài)動詞, be為動詞原形,句中作謂語maybe副詞,大概、也許,相當(dāng)于perhaps位于句首,作狀語He may be wrong , but I’m not sure. 易混點(diǎn)四 You mustn’t play football in the street. It’s too dangerous.易混點(diǎn)五 used to do / be used to doing / be used to do…used to do 表示過去常常發(fā)生的動作而be used to doing 意為“現(xiàn)在習(xí)慣做…”, be 可有各種時態(tài); be used to do 意為“……被使用去做……,” 為被動語態(tài)形式。t we;needn39。t we;needn39。 can C. Need。t C. can39。t C. may not D. needn39。t 13. Can you mend a TV set? No, I ______________. A. mustn39。 must12. Must I stay at home and take care of her? No, you ________. A. mustn39。t. You _____ read it only here. A. Must。t you;mustn39。t we;mustn39。 You needn’t explain it to me .Dare you say that again在肯定句中, 它們后邊多接動詞不定式,此時為實(shí)義動詞。must 側(cè)重于個人意志和主觀上的必要, 還可以在間接引語中表示過去的必要或業(yè)務(wù), have to 側(cè)重于客觀上的必要,可用于現(xiàn)在時、過去時和將來時I know I must study hard.My brother was very ill, so I had to call the doctor in the midnight. 易混點(diǎn)六can’t 根據(jù)其基本用法可譯為:(1)不會,I can’t speak English . ?。?)不能,We can’t do it now because it’s too dark.(3)在肯定句中用 might, may, must, 不用can2) 在疑問句中表示推測用 can,不用 might, may,must 3) 在否定句中用can’t(不可能), 不用 may, must。Jim can’t speak English. He could speak English at 5. We’ll be able to see him next week. He has been able to drive. I ‘m sure you ‘ll be able to finish it quickly.