if、whether引导的宾语从句

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宾语,从句,引导,whether

if / whether引导的宾语从句

一、由if或whether引导的宾语从句。if/ whether “是否”，说明对陈述的事物不明确或不清楚。

常用在ask， wonder, can(could） you tell me 等后，二者通常可以互换。例如：Lily asked if/whether she liked it。莉莉问她是否喜欢它。

I want to know if (whether） he lives there。我想知道他是否住在这儿。 He asked me whether (if) I could help him.他问我是否可以帮助他。小试牛刀:1、Mr。Ding asked 。 Could he come at seven ?

2、She wanted to know. Did you have a good time？

二、只能用 whether不能用 if 的情况

(1）在介词后面：

例如:I'm thinking of whether we should go fishing。

We are worried about whether it will rain tomorrow. （2）在动词不定式前（whether to do sth。）：例如:They asked me whether to go skating。（3）当与or not连用,或提出两种选择时: 例如:I don’t know whether he's free or not.

Mary asked whether I was doing my homework or not. (4）宾语从句提前时：

例如：Whether this is true or not， I can’t say。小试牛刀：请用if、whether填空

1。 I asked her___________ she had a bike。 2. We’re worried about ___________ he is safe. 3。 I wonder ___________ he is well。

4. I don’t know ___________ or not he is well。 5。 I don’t know ___________ to go.

三、宾语从句的语序：引导词+主语+谓语+其他成分

例如：I think that we can be good friends。 I can’t remember if I posted the letter。 May we ask what you are doing？

四、特殊的宾语从句———间接引语

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当直接引语是一般疑问句，改为间接引语时，连接代词用if或whether，而引述选择疑问句时用whether,引述动词用ask，没有间接宾语的可以加一个间接宾语me， him等。

例如：She said to Tom，“Can you help me ？” →She asked Tom if / whether he could help her. She asked,“Is this book yours or his？” →She asked me whether that book was mine or his.

小试牛刀： 1

、

The

teacher

asked,“Are

you

waiting

for

the

bus?”→The

teacher

asked 。

2、He asked , “ Are you a Party member or a League member？"→He asked 。 3、He said,“Did you see me last night？” →______________________________________。

练习

一、单选题。

1. The young man asked _____ it’s summer or winter。 A. either B. that C。 weather D. whether

2. I don't know _________ he will come tomorrow。 _________ he comes， I'll tell you． A. if; Whether B. whether； Whether C. if; That D。 if; If 3。 The teacher asks us ____ Jim can come back on time 。

A. that B. if C。 when D. what time

4。 Does anybody know ______ we will have a sports meeting this weekend or not . A。 if B. where C。 whether D. that 5。 He says that if it _______ tomorrow ， he _____fishing.

A. will rain , won’t go B. rained ， wasn't go C. rains , won't go D. rain ， will go

二、按要求填空。

1、 I want to know ______________________________________. (他是否要和我们一起去Party) 2、Ask him ______________________________________. (他是否能来)

3、 Could you tell me______________________________________ ?(李先生是否住这里) 4、Do they like to go skiing？ He asked。（将句子合并为一句） 5、 Is she doing her homework? Jim asked。 (将句子合并为一句）

6、She said to Tom，“Are there any apples on the table ？"

→ 。 7、She asked,“Have you finish your homework ？”

→ 。 8、She asked，“ Will you come with me tomorrow ?”

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