Unit 5 Looking into nature 语法讲义-宾语从句（一）2025-2026学年外研版八年级英语下册

U5 Looking into nature语法讲义—宾语从句（一）

      教材原句

For hundreds of years, people believed that dinosaurs looked like huge lizards.

数百年来，人们一直认为恐龙的外形就像巨大的蜥蜴。

They can tell us whether dinosaurs had feathers, but that's not all.

它告诉我们恐龙是否有羽毛，但其价值远不止于此。

      语法要点

第一个句子中，动词believe后面用了一个that引出的完整句子作宾语。第二个句子中，tell后面有两个宾语，一个是us，另一个是whether引出的完整句子。这样放在动词后面作宾语的句子我们称作宾语从句。

      语法讲解

一.  宾语从句定义

  （一）什么是宾语？

主语	谓语	宾语
He	remembered	the taxi number. (              )
		seeing him. (              )
		to feed the fish before leaving. (              )
		that this park used to be much quieter. (              )

（二）宾语从句的定义

                                             称为宾语从句。

        宾语从句分类：

I suppose that nature is full of magic secrets.          ____________________

  We are talking about whether amber has amazing magic. ____________________

  I’m afraid that we can’t unlock more secrets in amber.   ____________________

 

        宾语从句三要素：           ，            ，            

二.  引导词

（一）that引导的宾语从句

1. 从句是__________时，用________引导，        无词义，只起连接作用，一般可省略。

Eg1. I think. She is a teacher.        I think (____________) she is a teacher.

Eg2. Do you know? His father is a doctor.      

Do you know ____________________________?

2. 主句的主语是I或we，谓语为think, believe, suppose, guess，know等动词时，宾语从句的否定词not习惯上要转移到主句中，即“否定转移”。 

Eg1. 我相信他不会做如此愚蠢的事。

 I believe that he will not do such a silly thing.                

________________________________________________________

Eg2. 我认为明天不会下雨。 

                                                           

3. that在宾语从句中不能省略的情况

Eg1. He said (that) the book was very interesting and that (不省略) all the children liked to read it.

2. It says, on the card, that is made in China

3. I think it necessary that he should stay here. 

4. I can’t tell him that his father died.

5. She says that that is a good idea.

【总结】

1. 并列多个宾语从句，第__________个及以后的 that 不能省略。

2. 主句和从句之间有____________隔开时。

3. 主句中有it作_____________

4. 当宾语从句做双宾语中的_______________。

5.  that作从句的           时。

【练一练】利用下表中的短语，写出5句话

eg：He says （that）he feels ill.

 

（二）If/whether引导的宾语从句

1.从句是__________时，用___________引导，表“是否”。

        从句要用陈述句语序：主语+谓语+其他。

Eg1. Do you know? Is his father a doctor?    

Do you know                                   ？

Eg2. Does Kate get up early? Do you know?    

Do you know ____________________________?

【练一练】 that 或 if/ whether 填空

1. Lisa believes __________ she will win the tennis match.

2. I don’t know ____________ Tom is an English teacher.

3. We haven’t decided__________we will go on a picnic this weekend.

4. My foreign friends wonder __________ December is the best time to visit Hainan. 

5. Annie said ___________ she would return the book to Emily as soon as possible.

2.以下情况只能用whether

Eg1. It depends on whether it is going to rain.         在______________后；

Eg2. They asked me/ whether to go fishing tomorrow.   在______________前；

Eg3. I don’t know whether he will come or not.        与______________连用；

Eg4. Whether he will come, I can’t say.              位于_____________时。

【练一练】选择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.  时态

1. 观察下列句子，请圈出主句谓语动词和宾语从句的谓语动词。

 I think (that) you are right.

 She says (that) she won't take part in the sports meeting next Sunday.

 He told me (that) he was sick.

He said (that) he was watching TV at eight last night.

The teacher said (that) the earth moves around the sun.
【总结】1.当主句为_____________时态，从句的时态_______________________.

2.当主句为_____________时态，从句的时态_______________________.

3.当从句为_____________，从句的时态为_________________________.

【口诀】                      

                              

                              

                              

2. 当主句是一般过去时的时候，宾语从句必须运用相应的过去的某一种时态，从而达到主句和从句的相互一致。

Eg1. He said. He will go to Xi’an.      _______________________________________________

Eg2. He said. He is ill.     _________________________________________________________

Eg3. He told me. he is reading a book.     _____________________________________________

【练一练】

1.Our teacher told us that light______________(travel) much faster than sound.

2. Please tell me if she _______________ (come) again next time.

3. The teacher told us the sun________________(rise) in the east .

4. She doesn’t know if they _________________ (come) tomorrow.

5. We were sure that he_______________(go) to school tomorrow .