9. When I answered the telephone this morning, I knew _____________ the lady had the wrong number.

8. John was __________ himself ___________ sit for the examination.

7. I must remember to ______________ that book for you.

6. The song he sang at the party ____________ all of us.

5. _____________ letters are never delivered because the addresses are incorrect.

4. I must warn you that my patience is almost ____________.

3. In my opinion, Kurt will think it over and ______________.

2. It is always the husband who ___________ first when a quarrel breaks out between the young people.

1. The student helped the teacher _______________ English papers.

2. While dairy writers try to record how they feel very soon after things happen, journal writers try to better understand what has happened to them much later.

虽然日记作者试图在事情发生后不久就记录他们的感受，但是日记作者要在很久后才能努力尝试更好地理解发生在他们身上的事。

while引导的是一个让步状语从句，how和what引导的均为宾语从句。

while作连词用法小结：

(1)=though/although尽管，虽然

While I admit that there are problems, I don’t agree that they can’t be solved.

(2)与……同时

He listened to music while doing his homework.

　　　 (3)在……期间，当……时候

He fell off the bike while he was practicing riding.

(4)(表对比)而，却

He was against the plan while the majority was/were in favor of it.

考点例题：

She has golden hair when she was a child but __________ she got older and older, her hair went darker and darker.

A. while　 B. when　　 C. after　　　 D. as

[模拟试题]