˸߿Ӣɼϰ
Ҫ
̬canܣmayԣmust룩have toòought toӦãdareңused toȥhad betterwould ratherԸڿ϶Ǻ߶Ҫ ԭ .ڷУcanmaymustdarenothave toought toֱhaveoughtnotused toķʽused not toҲdidn't use toõý϶ࣻhad betterwould ratherķʽֱhad better notwould rather not.Щ̬ʱijһԡ
϶ͷе̬
һ̬ʵʽڿ϶еıȽ
1. canʾġܡݿijֶġԡ
1 Mild forms of execrise can some of the loss of flexibility that accompanies aging.
A stopB to stopC stoppingD be stoppedʾľ嶯ʱ be able to
He was able to do that without any help.Ҫκΰ
2. mayʾԡ൱be allowed to
2 If there is social or political change in a region A where a standard language B is spoken local varieties C of the language may developing D .
maymightɺas wellãʾ顱ΪǡΪá
You may as well keep a certain distance from that mad man. ǻǷԶΪá
You might as well go home now.㻹ڻؼΪá
3. mustʾ롱Ӧһ
3 The formation of snow must be occurring A slowly B in calm air and at a temperature near C the freezing point D .
4. have to ӶԭΣʾò롱mustǿ
Tom had to work into the deep night everyday to earn a living. ķΪÿ춼ùҹ
5. should ʾȰ桱顱ʱӦʾԤ⡱͡ܡ
He should take care of his parents as they are old enough not to live on themselves. ڸĸˣӦչǡ
He should be there now. ܵˡ
should have doneбʾ𱸻ڡ
6. ought ֻһʽoughttoȻӶԭαʾҪij£ΪӦӦá
4 The traditional goal of science is to discover how things arenot how they ought .
A toB to beC beD have been
5 You are quite rightI am inferring in my comments A that McGraw had not ought to B have broken C in the room without his permission D .
7. dare ̬ʣtoĶʲʽҪڷУʱ˳ƵβӪsЪINGִʽdaringȥʽEDִʽdared
6 Although Oriental ideas of woman's subordination to man prevailed in those daysshe meet with men on an equal basis.
A did not dared B dared not C dared not to D did dare not to
̬һʱе÷
can'tcan not cannot ʾܡ may not ʾԡ mustn'tmust not ʾһҪɡneedn't need not ʾءdare not ԭ ʾҡ
He can't finish his essay by this time. дġ
He may not sleep now. û˯
You mustn't criticize her in that way. 㲻Ӧ
You needn't come tomorrow. ûҪˡ
He dared not meet his fiance. ҼŮѡ
1 ȷΪA.̬canҪԭΣBCԣcanȻбʽϺߺֶνӣDҲ
2 DΪdevelop.mayҪԭΣdevelopingڷִʣȻҪӦΪdevelop.
3 A must occur˴˵ǿǿڷ£һʱ
4 BΪȷ𰸡
5 BΪought not to.
6 BΪȷ𰸡
Ƽ
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