couldn't 和shouldn't 区别,You( )play computer games very often.A.couldn‘t B.shouldn't

couldn't和shouldn't的区别,急要 couldn't 和shouldn't 区别,You( )play computer games very often.A.couldn‘t B.shouldn't should have done和shouldn't have done,couldn't have couldn t和 求两组英语句型的解释could have done 和 couldn't have doneshould have done 和 shouldn't have done should 和 shouldn't 分别+ shouldn't have done 和shouldn't do 区别 If you want better grades,you ______ watch so much TV.答案是shouldn't ,可以用couldn't吗shouldn't ,couldn't ,有什么区别呢 can't和couldn't区别? didn't 和couldn't的区别, couldn't have done和couldn't do的区别 should have done ,shouldn't have done.could have done,couldn't have done you -----tell him the news .it well make him sad.couldnt ,shouldnt May I go out to play No you ______A.mustn't B.couldn't C needn't D.shouldn't 强调句型和倒装句13 Such a noise ____that_____in the officeA is there ;I couldn't work B there is ; couldn't workC was there I couldn't work D there was couldn't I work14 ___,I shouldn't have won the prize fou physicsA had you not helped me B He tried the door very hard,but it ______ openA.couldn’t B.wouldn’t C.shouldn’t You ___ park here!It's an emergency exit.A.shouldn't B.needn't C.couldn't D.mu the men'S eyes are very good.He ----wear glasses.a.shouldn'tb.couldn't