if / whether 引导的宾语从句 一、由if或 whether引导的宾语从句.if/ whether 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. 莉莉问她是否喜爱它. 我想知道他是否住在这儿. 他问我是否可以帮助他. 是否〞,说明对陈述的事物不明确或不清晰. I want to know if (whether) he lives there. He asked me whether (if) I could help him. 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 thinkingof 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,或指出两种选择时： 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、特别的宾语从句 间接引语 当直接引语是一般疑问句,改为了间接引语时,连接代词用 引述动词用ask,没有间接宾语的可以加一个间接宾语 if或whether,而引述选择疑问句时用 whether , me, him等. 例如： She said to Tom, "Can you help me ? 〞 — She asked Tom if / wheher he could help her. She asked, "Is this book yours or his? 小试牛刀： — Sh'e asked me whether that book was mine or his. 1、 The teacher asked, "Are you waiting for the bus? 〞 The teacher asked . 2、 He asked , " Are you a Partymember or a League member? 〞 He asked . 3、 He said, " Did you see me last night? 侦. 练习 一、单项选择题. 1. The young man asked it's summer or winter. A. either B. that C. weather D. whether . C. if; That D. if; If 2. I don't know he will come tomorrow.he comes, I'll tell you A. if; Whether B. whether; Whether 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.（ 2、 Ask him.（ 3、 Could you tell me? 4、 Do they like to go skiing? He asked.（将句子合并为了一句） 他是否要和我们一起去 他是否能来 ） （李先生是否住这里） Party） 5、 Is she doing her homework? Jim asked. （将句子合并为了一句） 6、She said to Tom, A re there any apples on the table 7、She asked, Have you finish your homework 8、 She asked, Will you come with me tomorrow DDBCC whether (if) he will go to the park with us 本文来源：https://www.wddqw.com/doc/874a0104b868a98271fe910ef12d2af90242a894.html