八級(jí)下冊(cè)語法專題一情態(tài)動(dòng)詞should與could

1、情態(tài)動(dòng)詞 should與 could 的用法但有時(shí)并不表示過去。 語法講解1 should 是情態(tài)動(dòng)詞 shall 的過去式，(1) 表示委婉的勸告或建議，意為“應(yīng)該”。如：You should hand in your composition at once.你應(yīng)該立刻交上你的作文。(2) 表示可能性或推斷，意為“可能；應(yīng)該” 。如：I think they should be there now.我想他們現(xiàn)在應(yīng)該在那里。(3) 用于特殊疑問句中，表示意外、驚奇、不能理解等強(qiáng)烈感情。如：How should you know that?你是怎么知道那件事的？What should you d

2、o to relax?你該做什么來放松呢？2 could 是情態(tài)動(dòng)詞 can 的過去式，但有時(shí)并不表示過去。(1) 表示提議，比 can 更客氣、委婉。I could do the shopping for you, if you are tired.如果你累了，我能幫你買東西。(2) 表示請(qǐng)求，語氣比 can 更客氣、委婉。Could you show me the way to the hospital?你能告訴我去醫(yī)院的路嗎？ 語法精練I.單項(xiàng)選擇( )1.Schoolsallow students at least one houra day for sports.A wouldmig

3、htC shouldcould( )2.you tell me how to get to the postoffice?MustNeedCouldShould( )3. When can I come for the photos? I need themtomorrow afternoon.Theybe ready by 12 ：00.canshouldmightneed( )4. Could I borrow your dictionary? Of course youcanmustshould Dwill( )5.The basketball his.He loves playingb

4、asketball.A maybeB may beC may is Dmay not( )6.Wekeep the new traffic law and learn howto protect ourselves.( )7.willBshall D Could you please Sorry.Iwouldshouldhelp me do my homework?Youdo it by yourself.could; maycouldn't; shouldcan't; shouldcan't; may( )8. How was the youth club last night, Mark? It was great fun.YoumustB canshouldDmayn .根據(jù)句意用should或could填空1Sallycome.make dumplings by herself when she wasonly five years old.2In school, all the classmatesget on wellwith each other.3Youcall her if you have something important