课堂探究

　　1．The answer to the question contains a word which，when spoken，can have two meanings.

　　问题的答案中包含有一个单词，这个单词在说的时候，可以有两层的意思。

　　剖析：本句中when spoken是省略句，省略了it is，完整的状语从句应该是when it is spoken。如：

　　She advised me not to say anything until (I was) asked.

　　她劝我别说什么，除非有人要我说。

　　一般说来，当状语从句的主语是it或其主语与主句主语一致，且谓语动词含有be时，可省略从句中的主语和be动词。

　　If (it is)necessary，I will turn to my friend for help.

　　如果有必要，我将向我的朋友求助。

　　单项填空

　　1)If ______ to look after luggage for someone else，inform the police at once.

　　A．asked　　　　B．to ask C．asking D．having asked

　　2)-Should I look up each word that I don't understand?

　　-No，turn to your dictionary only when ______.

　　A．you are necessary B．you need

　　C．necessary D．you are needed

　　用所给动词的适当形式填空

　　3)When ______(ask)where she was from，the little girl was only crying，saying nothing.

　　4)While ______(cross)the road，don't forget to look both ways.

　　答案：1)A　2)C　3)asked　4)crossing

　　2．Sherlock Holmes looked up at the stars and whispered，"Watson，when you look at that beautiful sky，what do you think of？"

　　夏洛克·福尔摩斯仰望着星空，轻声说："华生，当你望着如此美丽的天空时，你想到了什么？"

　　考点 whisper vt.& vi.低语；小声说

　　He whispered to me that he was a shy man.

　　他低声对我说他是一个害羞的人。

　　It was whispered that he had been put into prison.

传闻他曾经坐过牢。