3.) It is (has been) two years since he came here.

4.) He will not go to bed until (till) his dad comes.

5.) It is not until his mother comes home that he will go to bed.(强调结构）

6.) Every time/each time I catch a cold, I have pain in my back.

7.) There was an applause the moment (as soon as) she appeared on the stage.

8.) By the time he arrived, the train had already gone.

Task2．The past perfect tense

1.完成书上P27--- 3,4题

2.过去完成时的构成:主动语态____________________________________

　　　　　　　　　　　 被动语态____________________________________

3.过去完成时表示 ______________________________________________

　　　　　　　　　　 _______________________________________________

4.Translate the following sentences

1) 到他们赶到那里时，火早已扑灭。

_______________________________________________________________

2) 我们本希望赶上8点的公交车，却发现那趟车已走了。

_______________________________________________________________

3) 我刚完成工作，灯就熄灭了。

________________________________________________________________

【当堂检测】

1. It seemed only seconds ________ the boy finished washing his face.

　　　　A. when B. before C. after D. even if

2. Hardly had he reached the school gate ________ the bell rang.

　　　　A. while B. when C. as D. as soon as

3. ________ you begin, I think you must continue.

　　　　A. When B. As C. Once D. Even if

4. I recognized you ________ I saw you at the airport.

　　　　A. the moment B. while C. After D. once

5. He was about to go to bed ________ the doorbell rang.