why don't you与why not的区别

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• 先行词是the way,place,time,reason关系副、代词何时可省?为什么这句要加where:We've all used thermometers to measure temperature but sometimes we need to measure temperature in places WHERE you can't put a thermometer.语法说,先行词是the way,表示方式,可用that（可省）或in which来引导一个定语从句.如果先行词是时 间或原因,也可用that（可省）或when或why来引导定语从句.如：（1）This was the reason that/why he was late yesterday.（2）This is the last time that I shall give you a lesson.这句是道改错题,还要加上where 是什么原因?没表达清楚，我的意思是that代替关系副词，那么我这道改错题为何还要加
• Why didn"t you give the wallet to the man at once?He ____ before l realized it was his.A.had been disappearedB.has disappearedC.had disappearedD.has been disappeared我选D 这两个有什么区别?
• 高中英语一题单选Linda,can you manage it without help？It seems no easy.-_____I have done such a task before.A.With pleasure.B.Take care.C.Don't worry.D.Why not？应该选哪个呢？为什么呢＠_＠
• 书面表达.李勤的美国笔友劳拉（Laura）问她喜欢什么运动.假如你是李勤,请根据下面的问题提示,写一篇70词左右的电子邮件.告诉劳拉你最喜欢的运动.信的开头已给出,不计入字数内.要求：1.What's your favorite sport?2.Why do you like the sport?3.When do you often do it?4、Are you good at it?5.What's your new term‘t pian?采用be going to 结构.开头：Dear LauraHow are you?You asked me about my favorite sport in your last letter.Now let me tell you something about it?...9月8日必须给出、谢谢各位!
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• ①He fell behind the others.②Why don't you go by bus?改为同义句①He fell behind the others.改为同义句He couldn't _____ ______ with the others.②Why don't you go by bus?改为同义句______ ______ ______ by bus?
• I'm hungry.____go out for dinner.A.Why do we.B.How about C.Shall we.D.Don't you.Why?麻烦写下原因。好像只有Let’s 后面才用Shall we
• 改写句子:(1)What was Linda doing?(2)Why couldn't Linda see Davy?(3)Where was Davy?(4)What happen改写句子，都要改成The teacher said的宾语从句(1)What was Linda doing?(2)Why couldn't Linda see Davy?(3)Where was Davy?(4)What happened?(5)What was Davy doing?例句：Do you ever watch soap operas？The teacher asked if i watched soap operas。
• Sheldon：“Why on earth are you telling me all this ” Leonard:".I don"t know .Sometimes your movements are so lifelike ,I forget you are not a real boy 怎么翻译呢?
• 这两句英语语法正确吗 why don't you know either?why do you know too?
• 三者都是提建议的句型.Why don't you +动词原形……?Why not +动词原形……?What about +动词ing 形式……?如果这同时出现,应该怎么选择,
• Why don't you 后是跟动词原形吗