题目

题型：不详难度：来源：

Roger had just walked into his office and that was when he was told that his plan had finally been approved. Which of the following can be instead of the underlined(划线的) part to make the sentence better.

A．and then they told him	B．when it was learned by him
C．and then he learned	D．when he learned

答案

D

解析

试题分析：考查when的用法：when当…时候，也可以是“这时”相当于at that time，可以构成had done…when…这个固定结构，意思是：刚刚做完…这时…,用when更加简洁。句意：Roger刚刚走进办公室，这时他知道他的计划最后通过了。选D。
点评：when之前的分句为主要动作的发生提供时间背景。这一背景和主要动作之间有三种情况。1.某一连续性动作正在发生，突然发生另一事件。be doing…when…，2.某一短暂性动作就要发生时，突然发生另一事件，阻止了前一动作的发生。be about to do/ be on the point of doing…when…，3.某一动作已经完成，突然发生另一动作：have/had done …….when