Unit 2 Expressing yourself（语法提升）-2026年春三年级英语下册易错题专项训练（人教PEP版·新教材）

2026年春三年级英语下册易错题专项训练

Unit 2 Expressing yourself（语法提升）

拥有某物的表达

1．have与has的使用规则：

（1）主语为第一人称（I/we）、第二人称（you）、复数名词（pets/dogs/parents）时，用have

例句：I have a rabbit．我有一只兔子。

They have short legs．它们有短腿。

（2）主语为第三人称单数（he/she/it/ 单数名词）时，用has

例句：It has long ears and a short tail．它有长耳朵和短尾巴。

The fox has a long tail．这只狐狸有一条长尾巴。

2．核心句型：

（1）肯定句：主语+ have/ has+其他。

例：I have an apple．我有一个苹果。

It has a long tail．它有一条长尾巴。

（2）否定句：主语+ don’t/ doesn’t+ have+其他。

例：I don’t have apples．我没有苹果。

The fish doesn’t have legs．鱼没有腿。

（3）一般疑问句：—Do/ Does+主语+ have+其他？

—Yes,主语+ do/ does．/ No,主语+ don’t/ doesn’t．

例：—Do you have a pet?你有一个宠物吗？—Yes,I do．是的，我有。

—Does Tina have a card?蒂娜有卡片吗？—No, she doesn’t．不，她没有。

1．人称搭配错误：

错误：It have a long body．（it 是三单，需用 has）

正确：It has a long body．

2．否定句 / 疑问句助动词错误：

错误：Does she has a rabbit?（does 后接动词原形 have）

正确：Does she have a rabbit?

3．与 there be 句型混淆（表 “拥有” vs 表 “存在”）：

错误：There has a rabbit in the box．（表 “存在” 用 there be，表 “拥有” 用 have/has）

正确：There is a rabbit in the box．（盒子里有一只兔子 —— 存在）

(     ) 1． —______ you have a pet? —Yes, I do．

A． Do                                        B． Does                                         C． Are

(     ) 2． My parents ______ two cats． They are fat．

A． has                                    B． have                                         C． is

一、用have或has填空。

1． Lions __________ long tails．

2． That dog __________a thin body．

3． My father __________a fat body．

4． They __________ small noses．

5． Mengmeng __________ long hair（头发）．

6． These giraffes __________ long legs．

7． Our teachers __________ strong arms．

8． It __________a short tail．

9． Do you __________ any books?

10． Mike doesn’t__________a bag．

二、根据汉语意思补全句子。

1．我们今天有四位新学生。

We  today．

2．我的哥哥有长长的胳膊。

My brother ．

3．我的猫有一个胖胖的身体。

My cat ．

Do引导的一般疑问句及其回答

1．一般现在时中，当句子以实义动词(如eat、play、study等表示具体动作的词) 作谓语时，若要表达“询问 动作是否发生”，必须用Do/Does作为助动词引导一般疑问句。

2．当主语是第一人称(I, we)、第二人称(you)或者第三人称复数(they, my friends, these cats)时，助 动词用do．

3．句型结构：—Do+主语+动词原形+其他？—Yes,主语+ do．No,主语+ don’t．

例句：—Do you like dogs?你喜欢狗吗？

—Yes,I do．是的，我喜欢。/ No,I don’t．不，我不喜欢。

注意区分：

1．当主语是第三人称单数(he, she, it, Tom, the boy, my mother,a bird)时，助动词用does．

2．当主语是不可数名词(water, rice．．．)时，助动词用does．

3．句型结构：—Does+主语+动词原形+其他？—Yes,主语+ does．No,主语+ doesn’t．

例句：—Does he often sing songs?他经常唱歌吗？

—Yes, he does．是的，他经常唱。/No, he doesn’t．不，他不经常唱。

(     )1． —_________ you like rabbits? —Yes, I do． They’re cute．

A． Do                                 B． Does                                  C． Are

(     )2． —Do they often play together? —_________

A． Yes, they are．                      B． No, they don’t．          C． Yes, they do．

一、单项选择。

(     )1．—__________often dance?

—Yes,I do．

A． Do I                                      B． Do you                               C． Does he

(     )2．—__________Tom like dogs?

—No, he __________．

A． Do; do                                          B． Does; doesn’t                       C． Is; is

(     )3．—Do you __________a sister?

—Yes．

A． have                                      B． has                                           C． is

(     )4．—Do they come from China?

—__________They come from the USA．

A． Yes, they do．                        B． No, they don’t．                  C． No, they aren’t．

二、根据图片提示补全对话。

1．—__________she like apples?

—Yes, __________ __________．

2．—__________you __________big eyes?

—No, __________ __________．

3．—__________you often sing and dance?

—__________, __________ __________．

描述动物们的外貌特点

本单元描述动物外貌的核心是“形容词+名词”搭配和“have/has表特征”句型，需掌握核心规则：

1．核心句型：

（1）单数动物：It is +形容词（体型/状态）． / It has +形容词+名词（肢体 / 特征）．

例句：It is thin．它很瘦。

It has long ears and a short tail．它有长耳朵和短尾巴。

（2）复数动物：They are + 形容词． / They have +形容词+名词．

例句：They are fat．它们很胖。

They have big mouths．它们有大嘴巴。

2．核心形容词：

体型：fat（胖的）、thin（瘦的）、big（大的）、small（小的）

长度：long（长的）、short（短的）

状态：slow（慢的）、fast（快的）

1．形容词与名词搭配顺序错误：

错误：It has a tail long．（形容词需在名词前作定语）

正确：It has a long tail．

2．have/has 与人称搭配错误：

错误：They has long bodies．（they 是复数，用 have）

正确：They have long bodies．

3．易混淆形容词误用：

错误：The dog is tall．（形容动物胖 / 瘦用 fat/thin，tall 形容身高）

正确：The dog is fat．

一、单项选择。

(     )1． The rabbit ______ long ears and a short tail．

A． have                               B． has                              C． is

(     )2． —What does the fox look like? —It ______ thin and it ______ a long tail．

A． is; has                            B． has; is                         C． is; have

(     )3． They ______ big and they ______ short legs．

A． are; have                        B． is; has                         C． are; has

(     )4． This dog ______ not fat． It ______ thin．

A． is; is                               B． has; is                         C． is; has

(     )5． —Does it ______ a big mouth?   —Yes, it does．

A． have                               B． has                                    C． is

二、用 be 动词（is/are）或 have/has 填空

1．The cat __________ fat． It __________ a long tail．

2．The rabbits __________ small． They __________ long ears．

3．This turtle __________ slow． It __________ short legs．

4．Those foxes __________ thin． They __________ long tails．

5．The bird __________ not big． It __________ a small body．

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参考答案

一、1． have 2． has 3． has 4． have 5． has 6． have 7． have 8． has 9． have 10． have

二、1．have four new students      2．has long arms       3．has a fat body

一、1． B解析：答语为“Yes,I do．”, 说明问 句主语是“you”, 助动词用“Do”, 故选B．

2． B解析：主语“Tom”是第三人称单数， 在一般现在时的一般疑问句中，借助助动词 ”does”, 否定回答用“No, he doesn’t．”, 故选B．

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