Question

When _____ his view about his job as a teacher, Mike said he found it very interesting and rewarding.

A．asking

B．asked

C．having asked

D．to be asked

Answer 1

B

试题分析：句意:当马克被问做教师这个职业时的看法。他说他发现这个工作是非常有趣和值得的。这里when引导的省略句，完整的是when he was asked his view about his job as a teacher，这里当从句中的主语与主句的主语一致，并且从句的谓语动词有be时，这时从句的主语与be同时省略，故选B。
点评：本题难度适中。为了使话说得简明扼要，英语句子中某个单词、短语甚至从句或主句都可以省去。这种省去句子某些成分而保持句子意思不变的现象，称为省略。它是高中阶段的重要的语法项目，需要考生仔细分析句子结构，来确定省略的内容。这里考生容易误选A。
即学即练:He is rather difficult to make friends with, but his friendship，______ is more true than  any other.
A.once gained                          B.when to gain
C.after gaining                        D.while  gaining
解析：A。考查省略句。once gained =" once" it is gained。当状语从句的主语和主句的主语一致且从句中含有be动词时，可省略从句中的主语和谓语部分。