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Yours, Mrs. Smith根據(jù)信件內(nèi)容及下列提示內(nèi)容,幫 Jenny給 Mrs. Smith寫一封回信。( 3)表示建議或勸告,意為 “可以;不妨 ”。( 2)表示請(qǐng)求許可。They ______ arrive before dark. shouldshould的用法 should 是情態(tài)動(dòng)詞, 后接動(dòng)詞原形 ;表示否定時(shí)要在 should 后直接加上not, 縮寫為 shouldn’t, 其基本用法:( 1)表示建議、勸告( 2)表示義務(wù)( 3)表示推測(cè),推論單項(xiàng)選擇:( )1. Tony ______ play the piano very well at the age of 5. A. can B. could C. will D. should ( )2. ______ you pass me a pen? I’d like to write down the telephone number. A. Should B. Could C. Will D. Need( )3. —Could I use your bike? —Yes, of course, you ______ . A. Can B. could C. will D. need( )4. —I need some money to buy a puter. —Maybe you ______ get a parttime job. A. must B. may C. couldn’t D. couldcould 的用法could 是情態(tài)動(dòng)詞 can的過(guò)去式 , 但常用來(lái)表示委婉的語(yǔ)氣,此時(shí)與過(guò)去式無(wú)關(guān),語(yǔ)氣比 can 更委婉。You ______ ______ your teeth before you go to bed. 2. 你不應(yīng)該天天玩游戲。t you...?You should/could...想想你有什么困擾?在小組內(nèi)選出最有代表性的問(wèn)題,并在組內(nèi)討論給出合理建議。t you...? You should/could...B:Thanks/Good idea/You’re right .