1.( 典型例题) It wasn’t until nearly a month later __ I received the manager’s reply.
A. since B. when C. as D. that
[考场错解] B
[专家把脉] 很多考生误以为用when来引导时间状语从句，分析本句结构会发现，本句实际上是由It is／was not until...that ...结构构成的强调句。
[对症下药] D
2.(典型例题) It was __ back home after the experiment.
A. not until midnight did he go
B. until midnight did he go
C. not until midnight that he went
D. until midnight when he didn’t go
[考场解错] A
