Unit 1-3语法易错点巩固提升（专项训练）-2026-2027学年外研版（三起）英语三年级上册

外研版三年级上册英语 Unit 1—3 语法易错点巩固提升练习

（I'm / He's / She's / We're / It's · What's this? · Is it...? · What colour is it?）

【易错点速览】

(1) I'm = I am，表示「我是」：I'm Sam. / I'm nine. / I'm from the UK.

(2) He's = He is，表示「他是」：He's Daming. / He's nine, too.

(3) She's = She is，表示「她是」：She's Amy. / She's my friend.

(4) We're = We are，表示「我们是」：We're friends. / We're twins. / We're from the UK.

(5) It's = It is，表示「它是」：It's a book. / It's red. / It's my schoolbag.

(6) What's this? 询问近处物品：What's this? — It's a pen.（this 指近处）

(7) What's that? 询问远处物品：What's that? — It's a ruler.（that 指远处）

(8) Is it...? 一般疑问句：Is it a pen? — Yes, it is. / No, it isn't.

(9) isn't = is not，表示「不是」：No, it isn't. It's a pencil.

(10) a 用于辅音音素开头的单词前：a pen, a book, a ruler, a schoolbag.

(11) an 用于元音音素开头的单词前：an eraser, an apple, an orange.

(12) What colour is it? 询问颜色：What colour is it? — It's red.

(13) 颜色词汇：red（红色）、blue（蓝色）、yellow（黄色）、green（绿色）、pink（粉色）、orange（橙色）、purple（紫色）、black（黑色）。

(14) Hello / Hi 打招呼：Hello! / Hi! 回答也用 Hello! / Hi!

(15) Nice to meet you. 表示「很高兴见到你」，用于初次见面。

(16) 年龄表达：I'm nine. / She's nine, too.（too 表示「也」）

一、用 I'm / He's / She's / We're / It's 填空（注意大小写）

提示：根据句意判断是自我介绍、介绍他人还是介绍物品，句首首字母大写。

1. Hello! ______ Sam. I'm nine.

2. This is Amy. ______ my friend.

3. ______ Daming. He's nine, too.

4. — What's this? — ______ a book.

5. Sam and I are friends. ______ good friends.

6. ______ Lingling. I'm from China.

7. Look at the boy. ______ my brother.

8. — What colour is it? — ______ red.

9. Amy and Sam are twins. ______ from the UK.

10. This is my cat. ______ white.

11. ______ Bobo. I'm a robot.

12. That is Ms Smart. ______ my teacher.

13. — Is it a pen? — Yes, ______.

14. My friend and I are nine. ______ nine.

15. ______ a ruler. It's on the desk.

二、写出下列缩写的完整形式

提示：注意撇号（'）代替了省略的字母。

缩写	完整形式	缩写	完整形式
I'm	__________	He's	__________
She's	__________	We're	__________
It's	__________	What's	__________
isn't	__________	That's	__________

三、用 a / an 填空

提示：辅音音素开头用 a，元音音素开头用 an。

1. It's ______ pen.

2. It's ______ eraser.

3. It's ______ apple.

4. It's ______ book.

5. It's ______ orange.

6. It's ______ ruler.

7. It's ______ schoolbag.

8. It's ______ egg.

9. It's ______ pencil case.

10. It's ______ umbrella.

11. It's ______ cat.

12. It's ______ ice cream.

13. It's ______ dog.

14. It's ______ English book.

15. It's ______ desk.

四、单项选择

1. — Hello! — ______

A. Goodbye!

B. Hello!

C. Thank you.

D. Sorry.

2. ______ Sam. I'm nine.

A. I'm

B. He's