if、whether引导的宾语从句

1、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 as

2、ked . 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：Im 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

3、选择时:例如：I dont know whether hes 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 cant say.小试牛刀：请用if、whether填空1. I asked her_ she had a bike.2. Were worried about _ he is safe.3. I wonder _ he is well.4. I dont know _ or not he is well.5. I d

4、ont 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 cant 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 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 aske

5、d 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 nig

6、ht?” _. 练习一、单选题。1.The young man asked _ its summer or winter. A. either B. that C. weather D. whether2. I dont know _ he will come tomorrow. _ he comes, Ill tell you A. if; Whether B. whether; Whether C. if; That D. if; If3. The teacher asks us _ Jim can come back on time . A. that B. if C. when D.

7、what time4. Does anybody know _ we will have a sports meeting this weekend or not . A. if B. where C. whether D. that5. He says that if it _ tomorrow , he _fishing. A. will rain , wont go B. rained , wasnt go C. rains , wont go D. rain , will go 2、 按要求填空。1、 I want to know _. (他是否要和我们一起去Party)2、Ask h

8、im _. (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 ?” . DDBCCwhether (if) he will go to the park with uswhether (if) he can comewhether (if) Mr. Li lives hereHe asked if they liked to go skiing 5、Jim asked if she was doing her homework6、She said to Tom if there were