Question

一道英语选择题 PS:请写出为什么

It was not ____ she took off hr dark glasses ____ I realized she was a famous film star.
A.when;that B.until;that C.until;when D.when;then

Answer 1

选B。
这里不是定语从句，这里是一个固定的句型结构“It is······that······”这是一个强调句，强调的部耐锋分就是扰搏第一个省略号表示的成分，任何一个句子都可以变换成强调句，你所列举的句子就是强调“she took off her dark glasses".这个句子还原就是：“I didn't realize she was a famous film star until she took off her dark glasses."因为强调句中对until 有规定：否定缓亩祥词要前移。

Answer 2

B
not until 是一个词组“直到-才猛闭”的意思
此处表达的意衡知斗思不咐磨是时间状语从句 所以排除C

Answer 3

B 这句考察的是not 。。。until ，直到。。才。。粗笑的用法，根据句意岩卖含就可知道配笑知道她去了眼睛，我才意识到她是她是个电影明星。

Answer 4

B 强调句 固定搭配

Answer 5

选b.not until that是固定搭配，直到什么时候才