1.在句子中學習語法。當你消化了以下句子的時候，不但過了語法關，更重要的是你的表達能力也上了一定的量級，實實在在的一舉數得！

1)Harry was reading while his brother was watching TV.
哈里正在讀書而他的兄弟在看電視.
2)While the discussion was still going on,Eric came in.
正當討論仍在進行時,Eric走了進來。
3)Just as we were using the computer,the power went out.
正當我們在用電腦是，就沒電了。
4)As I was coming here,I met Jenny.
正當我到這里來是，我遇上了Jenny.
5)The moment I was leaving the house,the phone rang.
正當我離開家之際，電話響了。
2.在文章中體會語法運用
---- Too Late ----

失之交臂
1]The plane was late and detectives were waiting at the airport all morning. They were expecting a valuable parcel of diamonds from South Africa.
2]A few hours earlier,someone had told the police that thieves would try to steal the diamonds.When the plane arrived,some of the detectives were waiting inside the main building while others were waiting on the airfield.
3]Two men took the parcel off the plane and carried it into the Customs House.While two detectives were keeping guard at the door,two others opened the parcel.To their surprise,the precious parcel was full of stones and sand!