Question

12．我看見他時(shí)，他正在打電話．
Hewas making a telephone call when I saw him．

Answer 1

分析 was making a telephone call．

解答 答案：was making a telephone call．這里是when引導(dǎo)的時(shí)間狀語，從句是一般過去時(shí)，主句是表示他正在打電話，故用過去進(jìn)行時(shí)was/were+doing，主語是三單he，故用was，打電話make a telephone call，make去e加ing，故答案是was making a telephone call．

點(diǎn)評 我們知道，When引導(dǎo)的時(shí)間狀語從句，表示當(dāng)一個(gè)動(dòng)作發(fā)生時(shí)，另一個(gè)動(dòng)作同時(shí)發(fā)生．
所以依據(jù)when時(shí)間狀語從句的定義，應(yīng)該主，從句中要有一個(gè)為進(jìn)行時(shí)，或兩個(gè)都為進(jìn)行時(shí)（類似有：while，as，）如下例所示．
When I saw her，she was typing a letter．
When/（while） I was doing my homework，my mother was doing housework．