为什么用once不用ever

为什么用once不用ever Nobody could ever replace you为什么用could不用can i will only explain it （once ）为什么explain it 后面用once而不用one 汉译英：我曾经也做过这种事.“曾经”用不用“ever”?如果不用，为什么？ This an exciting place ____I have ever visited.空格处为什么用which而不用where? Have you ever been to HangZhou为什么用been 不用went 呢 英语语法：once and future king 为什么副词once可修饰名词king?改用ever行不行?为什么?三个问请切题 she hardly ever watch TV 但she is hardly ever late for school为什么?为什么一个用is,一个不用is,用is的词组还有哪些? Do you ever practice conversations with friend为什么在这里有ever却不用完成时 Once fighting broke out between the two villages and many为什么要用broke out 而不用had broken out This is the most beautiful buliding that I have ever visited.此句中为什么用that而不用which? He still works in the same factory as she did 30years ago为什么用still,不用already,ever only one of them has ever gone to live in the country新概念 ：为什么用has ever gone to 不用has ever been to gone 不是去了,没回来吗 often,ever day,usually,three times a week,sometimes,once a week,always,once a month,never造句,全用 will he ever love me?为什么这里要用ever? Ever do not care!Care only once! i renmenber ( ) to help us if wi ever got into troubleA.once offeringB.him once offeringC.him to offerD.to offer him选哪个?为什么? she never laughed,nor did she ever lose her temper.这个句子里ever后面为什么不用lost而是lose?