may,might,can,could的四个区别.must‘t,can’t的区别.①什么时候用may,might,can,could.②must‘t,can’t的区别③may,need,must在不同句式中的否定形式④什么时候用may/might 或can/could⑤什么时候用may be/might be或can be/could be呵呵 麻烦咯

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• Could I watch TV ,Mom? No,you .You must finish your homework first.Could I watch TV ,Mom?No,you（ ） .You must finish your homework first.A.mustn’t B.couldn’t C.may not D.needn’t选哪个?我觉得是B,可是我们老师说是A 知道的能不能解释下,难道是情态动词的回答can't和couldn‘t不一样?什么时候用couldn't什么时候用can't 呢?那么You may be 和You might be能否等同?Excuse me,is this the right way to No.1Middle School?Sorry,I'm not sure.But it ( )be.A/can B.need C .must D.might.这个问题又该选哪个?我们老师说是选D的,可是migh
• 有关情态动词表推测的问题例1：Conserding his ability and experience,he ____ better.A.can have doneB.might have done应该选B,老师说没有can have done,因为can表能力时有时态区别,所以只有could have done,但有can't have done,这是can表推测,没有时态区别.（说的对吗?）但这里用might,might不也表推测吗?为什么不能是选A,can表推测?难道can只能做否定推测以及客观推测?还有,关于should的用法,should也可表推测吧,“他应该是最高的孩子”应该是什么?“He may be the tallest boy.”should can行吗?并请给出解释.例2.-I can't find my purse.-You ___ have lost it while shopping.A.may B.can C.should其他两个为什么不行呢?
• may,might,can,could的四个区别.must‘t,can’t的区别.①什么时候用may,might,can,could.②must‘t,can’t的区别③may,need,must在不同句式中的否定形式④什么时候用may/might 或can/could⑤什么时候用may be/might be或can be/could be呵呵 麻烦咯
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• 关于must may can could might can't的填空The brown wallet ( )be Tom's or Bill's ,They both like brownI haven't seen Alice for several years.She ( )be a big girl nowWhose jeans are these?I found them on the chair in the living room.They ( )be mine.I put my jeans on the bed.