Question

It was not until she got home _______Jennifer had realized she had lost her keys.

A．where

B．that

C．when

D．before

Answer 1

B

试题分析：这是强调句型，其结构是：It was+被强调部分+that/who+其他。判断强调句型的方法是把It was that这三个词去掉，整个句子不缺成分，意思完整。当被强调部分是until+状语时，要把主句中的not一起放在被强调部分。故选B。
点评：本题难度适中。强调句型是高中阶段的重难点之一，也是高考的热点，需要考生有分析理解句子的结构的能力。近几年高考把强调句型与其他从句混合在一起考查更增加了试题的难度。
即学即练：--- He got hisfirst book published. It turned out to be a bestseller.
--- When was ____?
--- ____ was in 2000 when he was still in college.
A. that; This  B. this; It   C. it;This   D. that; It
解析：D。第一个空that代指前面那件事，意思是“那是什么时候”？后一个空是用 it 强调句型来强调，意思 是“那是在2000年他还在读大学的时候（他出版了他的第一本新书）”，句中when引导的 是定语从句，强调句型中的“…that he got his first bookpublished”省略了，