这句话为什么要加个"on"Why don't we all just comeon in and have some cake,能不能不加呢

这句话为什么要加个onWhy don't we all just comeon in and have some cake,能不能不加呢 Why does he don't like math?这句话正确吗?翻译：他为什么不喜欢数学? why you don't wait for me?这句话对吗 不要问我为什么 因为我喜欢 英文不要问我为什么 因为我喜欢这句话的英文翻译Don't ask me why ,because i like i don't know why did she do such a thing这句话的语法对吗,为什么你还没说为什么呢 i don't know why he hasn't come yet.这句话里为什么要用hasn't?可以用is't吗? why don't you bring it on so come on Don't go out on school nights.这句话对吗? Why don't you go to the zoo with 这句话的同义句. Why don't you play us what you know well?这句话的意思 i don't know why to go there这句话哪里有错啊? Why don't we make a card?这句话的近义句是什么? why don't you speak 这句话是不是在语法上那个说不通呀 why people don't like the rainy day?这句话有错吗 I don't know why always like this!Don't do like that!这两句话,请译中文 这句话副词比较级为什么不加than,这句话为什么不这句话为什么不加than this wonderful place.yes,whywhy don'tcome more often这句话可以这样说吗　why don't we come more often than usual.说一下原因加than this w这 关于动名词的用法Why don't you having some fish and eggs?在这句话中为什么用动名词having在什么时候用动名词?what about you having some fish 在这句话中为什么用动名词having They don't know why you talked to them soThey don't know why you talked to them so angry这句话对吗