I had finished my homework when he knocked at the door. 我刚做完作业，他就来敲门。

　I was walking along the street when someone called me from behind.我正沿着街道走时，忽然后面有人喊我

小试牛刀：完成句子

　①我们正在看电视，这时有人敲门。

　We_______________ when there was a knock on the door.

　②我正在做饭，这时电话响了。

　_________ __when the telephone rang.

（2）spot vt.发现，认出 n．斑点，污点，场所，地点

　He came to the spot and began to report on the spot. 他到了现场，当场就开始报道。

　I spotted my friend walking in the park. 我发现我的朋友在公园散步。

归纳拓展：spot sb.doing sth.发现某人正在干某事 on the spot当场；在现场；到现场

小试牛刀： 写出下列句中spot的含义

④The police spotted a serious mistake in his action.________

⑤The policeman ran to the spot immediately.________

⑥I don't know the exact spot where it happened.________

4．And it_was the ship that brought you to England.(P18)正是那艘船把你带到了英国。

　　本句属于强调结构，强调句子的主语_____________

归纳拓展：

强调结构构成形式是：It is/was＋____________＋_______/_____＋句子其他成分

一般疑问句的强调结构 / 特殊疑问句的强调结构呢？

not...until结构强调句型的构成：It＋is/was＋_____________＋______＋句子的其他部分。

翻译 1）It was not until she spoke that I realized she was Mary.

2）It is Jim rather than his parents who/that is going to South Africa

小试牛刀：被强调部分分别是句中的_______、_______、__________、_________

对此句进行强调I came across Jim in the park yesterday. （任意2种）

　　① _____________________________________________

　　② ______________________________________________

5．account for导致；做出解释（A/B/C）

　　...which accounts for my appearance.(P18)这就是我为什么衣冠不整的原因了。

　　　①His illness accounts for his absence from the meeting.

翻译: