The book was written in 1946,_____the education system has w

The book was written in 1946,_____the education system has witnessed great changes.为什么答案是since when,而不是since which?
此句中不缺少主语或宾语,因此缺少状语成分,但不应该是when=since which么?那另一道题:We are just trying to reach a point_____both sides will sit down together and talk.为什么这道题要填where而不是at where啊?
ANDREASDY 1年前 已收到1个回答 举报

又闻空阶夜雨 幼苗

共回答了18个问题采纳率:88.9% 举报

好像没有since which和at where这种搭配.where是a point的同位语,是同位语从句,所以不用at
where.when表示时间,指代1946,since后面一般跟时间.which一般不用来指代状语.

1年前

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