5.if和when既能引导条件状语从句，又能引导宾语从句。因此，遇到它们就要认真分析一下。

1.I want to know if he_______(come)tomorrow.

If he_______(come).Please tell me.

2.Can you tell me whenhe________(appear)?

Please call me when he_______(appear).

三、由连接代词what,whom,whose,which,what及连接副词when,where,how,why引导的宾语从句

例如：

n Do you know who(whom)they are waiting for?

n He asked whose handwriting was the best.

n Can you tell me where the No.3 bus stop is?

n I don’t know why the train is late.

eg:

1.He asked__________________________.(谁能回答这个问题）

2.Do you know_________________________.（他们在等谁）

3.Can you tell me.(他在哪儿）

4.Could you tell me______________________.（我该怎么去车站）

5.Would you tell me______________.（为什么火车迟到了）

二、时态归纳：

1、当主句的谓语动词是一般现在时或一般将来时，宾语从句的谓语动词可以用所需要的任何一种时态。eg

Jim_______(be)a worker two years ago.

Jim(be)an English teacher now.

Jim(cook)dinner tomorrow.

Jim(sing)a popular songnow.

Jim(be)to the Great Walltwice.J

2、当主句的谓语动词是一般过去时，宾语从句的谓语动词要用相应的过去时态，但当宾语从句叙述的内容为客观真理时，仍然用一般现在时。e.g.

He will go to Hong Kong.

2)He is sick.

3)He is reading a book.

4)He has finished his work.

1)He_________to Hong Kong.

2)He_____sick.

3)He___________a book.

4)He____________

Exercise：

将下面的句子连接成为含有宾语从句的复合句。

1)These flowers are from Guangdong.He said.

He said____these flowers_______from Guangdong.

2)Light travels faster than sound.My teacher told me.

My teacher told me_____light_______faster thansound.

3)Are the children playing games?Tell me.