already和yet前的have要变成过去式吗?或者 前面要加have吗?

already和yet前的have要变成过去式吗?或者 前面要加have吗? We have already visited the Great Wall three times.already要变成yet还是直接去掉? yet和already的用法 already和yet的区别 already 和 yet 的区别 already 和 yet的区别 yet和already的区别 英语中already和yet的用法 yet和already的用法区别. have already been重复吗?have been的意思不就是 已经被...他和have already been意思一样!have been的意思不就是 已经被...他和have already been意思是不是一样!还有英语中的yet在一些句子中要不要还是那个 yet,just,already的相同点和不同点和用法 have you finished already?为什么不用have you finished yet?have you finished already?为什么不是have you finished yet?我老师说过already 用于肯定句中,yet用于否定句和一般疑问句 Have you finished-----?already yet nearly already yet else的区别 Have you finished __the letter__?not__ .a.writing,already,already b.writing,already ,yet c.to write,yet,already d.write,yet,yet Have you finish your homework _________?----No,not _______.A.already,already B.yet,yet C.already,yet D.yet,already Have they watered the flowers ____?Yes,they have done it___A already;alreadyB already;yetC yet;alreadyD yet;yet 用already和yet造句谢谢了,