Unit 7 Doing chores at home重要语法（知识清单）-2025-2026学年译林版（三起）英语四年级下册

译林版四年级下册英语Unit 7 Doing chores at home重要语法知识点清单

(语法知识点·重点词汇·重点短语·重点句子)

一、核心句型

1. What are you doing?（你/你们正在做什么？）

答句：I'm/We're + 动词-ing形式 + 其他.（我/我们正在……）

拓展复数主语句型：What are they doing?（他们正在做什么？）

答句：They're + 动词-ing形式 + 其他.（他们正在……）

★缩写说明：What are = What're；I'm = I am；We're = We are；They're = They are

2. What is + 第三人称单数主语 + doing?（他/她正在做什么？）

答句：He's/She's + 动词-ing形式 + 其他.（他/她正在……）

★缩写说明：What is = What's；He's = He is；She's = She is

补充知识点：

•       一般疑问句：Be动词(am/is/are) + 主语 + 动词-ing形式 + 其他?

肯定回答：Yes, 主语 + be动词.

否定回答：No, 主语 + be动词 + not.

例句：Is she washing the clothes? Yes, she is. / No, she isn't.

例句：Are you sweeping the floor? Yes, I am. / No, I'm not.

3. What chores can you do at home?（你在家能做什么家务？）

答句：I can + 动词原形 + 其他.（我能……）

补充知识点：

•       第三人称单数句型：What chores can he/she do?（他/她能做什么家务？）

答句：He/She can + 动词原形 + 其他.

•       核心用法：can是情态动词，无人称和数的变化，后面必须跟动词原形。

练一练：

按要求改写句子

1.My mother is cooking lunch.（对划线部分提问）

______ ______ your mother ______?

2.I'm washing the dishes.（对划线部分提问）

______ ______ you ______?

3.He is making the bed.（改为一般疑问句）

______ ______ making the bed?

4.They are doing chores at home.（对划线部分提问）

______ ______ they ______?

5.I can water the flowers at home.（对划线部分提问）

______ ______ you ______ at home?

二、动词-ing形式变化规则（本单元核心语法）

本单元核心语法为现在进行时，表示正在发生或进行的动作，结构为：主语 + be动词(am/is/are) + 动词-ing形式，动词-ing形式变化规则如下：

1. 一般情况：直接在动词词尾加-ing

示例：wash → washing；clean → cleaning；water → watering；cook → cooking；sweep → sweeping；feed → feeding；play → playing；read → reading

2. 以不发音的字母e结尾的动词：去e，再加-ing

示例：make → making；take → taking；have → having；give → giving；write → writing；ride → riding

3. 以重读闭音节结尾，末尾只有一个辅音字母的动词：双写末尾的辅音字母，再加-ing

示例：run → running；swim → swimming；shop → shopping；sit → sitting；cut → cutting；put → putting

练一练：

用所给单词适当形式填空

1.My sister is ______ (wash) the clothes now.

2.Look! My father ______ (clean) the car.

3.I'm good at ______ (make) the bed.

4.The boy is ______ (feed) the cat in the room.

5.She can ______ (sweep) the floor very well.

6.Listen! The students ______ (read) English in the classroom.

7.My brother is ______ (run) in the playground.

8.— What are you doing? — I'm ______ (water) the flowers.

三、名词所有格用法