【正文】
t C. may not D. needn39。t 13. Can you mend a TV set? No, I ______________. A. mustn39。t C. can39。 must12. Must I stay at home and take care of her? No, you ________. A. mustn39。 can C. Need。t. You _____ read it only here. A. Must。t we;needn39。t you;mustn39。t we;needn39。t we;mustn39。 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(dòng)作而be used to doing 意為“現(xiàn)在習(xí)慣做…”, be 可有各種時(shí)態(tài); be used to do 意為“……被使用去做……,” 為被動(dòng)語態(tài)形式。 You needn’t explain it to me .Dare you say that again在肯定句中, 它們后邊多接動(dòng)詞不定式,此時(shí)為實(shí)義動(dòng)詞。must 側(cè)重于個(gè)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(shí)、過去時(shí)和將來時(shí)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 You mustn’t play football in the street. It’s too dangerous.易混點(diǎn)五can’t 根據(jù)其基本用法可譯為:(1)不會(huì),I can’t speak English . (2)不能,We can’t do it now because it’s too dark.(3) may為情態(tài)動(dòng)詞, be為動(dòng)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)四常用位置may be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。can 和 may 均可用來征求意見或許可,意為“可以”, 一般可互換2.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. We were able to reach the top of the mountain at noon.易混點(diǎn)二to兩者表示能力時(shí)用法相同, 但 can 只有原形 “can” 和過去式“ could ”兩種形式,在其他時(shí)態(tài)中 要用be able to 來表示。 can 和 beshouldn’ 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You needn’t meet him unless you’d like to. (2)needn’t + have+ 動(dòng)詞的過去分詞,表不需要完成但已完成的動(dòng)作,暗含時(shí)間或精力上的浪費(fèi)。 也可用于以 may 表示要求時(shí)的否定回答中。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。 (2)當(dāng)句子表推測時(shí),用can’t 表達(dá)不可能, He can’t be ill. He is playing chess with Tom.(3)can’t 還可用來回答“ May I …? ” 這樣的問句。其回答方式有以下幾種:Yes, please. All right. No, thank you. (六)不同情態(tài)動(dòng)詞的否定意義也不同 1. Would you show me your picture book?will, would, shall 的用法 (1) will 在一般疑問句中表示客氣的“請(qǐng)求、勸說”。May I borrow your ruler?Must we clean the room now? (2) 對(duì) may 引出的問