八年级下册语法专题一:情态动词should与couldWord文档格式.docx
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你应该立刻交上你的作文。
(2)表示可能性或推断,意为“可能;
应该”。
Ithinktheyshouldbetherenow.
我想他们现在应该在那里。
(3)用于特殊疑问句中,表示意外、惊奇、不能理解等强烈感情。
Howshouldyouknowthat?
你是怎么知道那件事的?
Whatshouldyoudotorelax?
你该做什么来放松呢?
2.could是情态动词can的过去式,但有时并不表示过去。
(1)表示提议,比can更客气、委婉。
Icoulddotheshoppingforyou,ifyouaretired.
如果你累了,我能帮你买东西。
(2)表示请求,语气比can更客气、委婉。
Couldyoushowmethewaytothehospital?
你能告诉我去医院的路吗?
●语法精练
Ⅰ.单项选择
()1.Schools________allowstudentsatleastonehour
adayforsports.
A.would B.might
C.shouldD.could
()2.________youtellmehowtogettothepost
office?
A.MustB.Need
C.CouldD.Should
()3.—WhencanIcomeforthephotos?
Ineedthem
tomorrowafternoon.
—They________bereadyby12:
00.
A.canB.should
C.mightD.need
()4.—CouldIborrowyourdictionary?
—Ofcourseyou________.
A.canB.must
C.shouldD.will
()5.Thebasketball________his.Helovesplaying
basketball.
A.maybeB.maybe
C.mayisD.maynot
()6.We________keepthenewtrafficlawandlearnhow
toprotectourselves.
A.willB.would
C.shallD.should
()7.—Couldyoupleasehelpmedomyhomework?
—Sorry.I________.You________doitbyyourself.
A.could;
may
B.couldn'
t;
should
C.can'
D.can'
()8.—Howwastheyouthclublastnight,Mark?
—Itwasgreatfun.You________come.
A.mustB.can
C.shouldD.may
Ⅱ.根据句意用should或could填空
1.Sally________makedumplingsbyherselfwhenshewas
onlyfiveyearsold.
2.Inschool,alltheclassmates__________getonwell
witheachother.
3.You________callherifyouhavesomethingimportant
totellher.
4.You_________notdriveafterdrinking.
5._________Iuseyourmobilephone,please?