1.在句子中学习语法。当你消化了以下句子的时候，不但过了语法关，更重要的是你的表达能力也上了一定的量级，实实在在的一举数得！

1)Harry was reading while his brother was watching TV.
哈里正在读书而他的兄弟在看电视.
2)While the discussion was still going on,Eric came in.
正当讨论仍在进行时,Eric走了进来。
3)Just as we were using the computer,the power went out.
正当我们在用电脑是，就没电了。
4)As I was coming here,I met Jenny.
正当我到这里来是，我遇上了Jenny.
5)The moment I was leaving the house,the phone rang.
正当我离开家之际，电话响了。
2.在文章中体会语法运用
---- 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!