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Unit3 答案+详细解析
一、选出不同类
1. B
解析：pen钢笔、ruler尺子是文具；rabbit兔子是动物。
2. A
解析：taste尝、smell闻是感官动词；book书本是文具。
3. A
解析：nose鼻子、tongue舌头是身体感官器官；computer电脑是工具。
4. A
解析：find找到、learn学习是动词；paper纸张是名词（物品）。
5. B
解析：eraser橡皮、pencil铅笔是文具；these这些是指示代词。
二、用所给词适当形式填空
1. these
解析：答句They’re（它们是）复数，this单数→复数these。
2. Does
解析：主语she三单，一般疑问句助动词用Does，首字母大写。
3. ducks
解析：These are+可数名词复数，duck→ducks。
4. use
解析：情态动词Can后面必须加动词原形。
5. find
解析：can’t（can not）后接动词原形。
6. those；carrots
解析：答句They’re复数，that单数→those；carrot变复数carrots。
7. is
解析：That单数，be动词用is。
8. are
解析：These复数，be动词用are。
三、单项选择
1. B
解析：these/They’re后接名词复数，只有pencils复数。
2. C
解析：耳朵两只，用复数ears；ear单数，eyes眼睛不符合hear（听）。
3. C
解析：问句：我能用你的尺子吗？No problem.没问题；A打扰一下，B我是的，不符。
4. A
解析：请求借橡皮，Sure.Here you are.当然，给你。
5. A
解析：Do引导一般疑问句，回答用I do。
6. C
解析：后句It’s under the bed在床下，不在床上，否定回答No,it isn’t。
7. A
解析：答Yes说明猜对了，You are right.你猜对了。
8. B
解析：our形容词性物主代词+名词classroom；we主格、us宾格不能直接加名词。
9. B
解析：blackboard黑板在墙上；chair椅子、desk书桌不在墙上。
10. A
解析：put…in…把……放进……里；in在里面。
11. B
解析：many许多+名词复数，desk→desks。
12. B
解析：in classroom在教室学习learn；play玩耍、sleep睡觉不符合场景。
13. A
解析：答It’s a book.是一本书，问句What’s this 这是什么。
14. A
解析：Is it...？肯定Yes,it is；B、C格式错误。
15. A
解析：make a kite固定搭配：做风筝。
四、补全对话
1. C 解析：下句Nice to see you,too，对应上句Nice to see you!
2. B 解析：Great表示赞同，上句提议Let’s draw...一起画画。
3. E 解析：找不到铅笔，询问Can I use your pencil 能借铅笔吗。
4. A 解析：答应出借，Here you are.给你。
5. D 解析：Thank you谢谢，回答You’re welcome不客气。
答案：1.C 2.B 3.E 4.A 5.D
五、阅读理解选择
1. B
解析：原文Catfish have a great sense of touch.鲇鱼靠触觉找食物。
2. C
解析：They can hear and talk with other dolphins.可以听+交谈。
3. C
解析：Eagles...see rabbits in the grass鹰能高空看见兔子。
4. A
解析：see看见→eyesight视力。
5. B
解析：全文讲各种动物的感官，Animals’ senses最合适。
六、阅读判断T/F
1. F
解析：Lili：see with eyes、hear with ears，没提nose闻气味。
2. F
解析：Mike用computer学习，Amy没说用电脑。
3. T
解析：Mike:use paper,pencils,books and computers。
4. T
解析：Mike:I want to draw a line with a ruler。
5. T
解析：Amy:They’re my rulers.（复数，有若干尺子）人教PEP版（新教材）三年级下册Unit 3 Tools and senses for learning
语法精选易错题（含解析）
一、选出每组单词中不同类的一项。
( )1.A．pen B．rabbit C．ruler
( )2.A．book B．taste C．smell
( )3.A．computer B．nose C．tongue
( )4.A．paper B．find C．learn
( )5.A．eraser B．these C．pencil
二、填空题。
1．—What are ____________ (this)
—They’re erasers.
2．________ (Do) she have a new pen
3．These are ________ (duck).
4．Can I ________ (use) your pencil
5．I can’t (find) my ruler.
6．—What are ________ (that)
—They’re ________ (carrot).
7．That ____ （be）my ruler.
8．These ____ （be）books.
三、单项选择题。
( )1．—What are these
—They’re ________.
A．pen B．pencils C．book
( )2．We can hear with our ________.
A．ear B．eyes C．ears
( )3．—Can I use your ruler, please
—________
A．Excuse me B．Yes, I do. C．No problem.
( )4．—Can I use your eraser, please
—______
A．Sure. Here you are. B．I can’t find my pen. C．Excuse me.
( )5．—Do you write it on your paper
—Yes, _________.
A．I do B．I can C．I am
( )6．—Is my bag on the bed, mum
—_________ It’s under the bed.
A．Yes, I do. B．Yes, it is. C．No, it isn’t.
( )7．—Is it a rubber
—Yes. __________
A．You are right. B．You are welcome. C．Guess again.
( )8．This is _______ classroom.
A．we B．our C．us
( )9．The _______ is on the wall.
A．chair B．blackboard C．desk
( )10．Put your pencil _______ the pencil box.
A．in B．on C．under
( )11．There are many _______ in the classroom.
A．desk B．desks C．a desk
( )12．We _______ in the classroom.
A．play B．learn C．sleep
( )13．—______
—It’s a book.
A．What’s this B．What colour is it C．How many
( )14．—Taste the apple. Is it sweet
—______
A．Yes, it is. B．Yes, it isn’t. C．No, it is.
( )15．Let’s ______ a kite.
A．make B．go C．write
四、 Lily和学校同学互相帮助。请从方框中选择合适的句子，补全对话。
Lily: Hey, Amy. 1
Amy: Nice to see you, too! 2
Lily: Great! Oh, no! I can’t find my pencil. 3
Amy: No problem. We can share. 4
Lily: Thank you.
Amy: 5
A．Here you are.
B．Let’s draw a picture together.
C．Nice to see you!
D．You are welcome.
E．Can I use your pencil
五、读短文，根据短文的内容选择恰当的选项。
Catfish(鲇鱼)have a great sense of touch. It can help them find food. Dolphins(海豚) can hear well, even under(在……下面) the water. They can hear and talk with other dolphins. Eagles(鹰) have good eyesight. They can see food from high in the sky. For example(例如), they can see rabbits in the grass.
( )1. The sense of ______ can help catfish find food.
A．taste B．touch C．smell
( )2. Dolphins can ______ with partners(同伴) under the water.
A．hear B．talk C．hear and talk
( )3. ______ can see rabbits from the sky.
A．Catfish B．Dolphins C．Eagles
( )4. The word “eyesight” means “______”.
A．视力 B．嗅 觉 C．听觉
( )5. What is the best title of the poster (海报的最佳标题是什么？)
A.Amazing animals B．Animals’ senses C．Animals with great senses
六、在日常生活和学习中我们会用到哪些感官和工具呢？Amy和同学们正在谈论这个问题。阅读对话，判断下列句子正(T)误(F)。
Amy: What helps you learn, Lili
Lili: I can see with my eyes and hear with my ears in class.
Amy: What about you, Mike
Mike: I can use paper, pencils, books and computers to learn.
Amy: Our senses and tools help us learn! I can smell with my nose and taste with my tongue. I can use pens, paper and books to learn.
Mike: What are these
Amy: They’re my rulers.
Mike: I want (想要) to draw a line with a ruler. Can I use your ruler, please
Amy: Sure. Here you are.
Mike: Thanks.
( )1. Lili can smell with her nose in class.
( )2. Amy can use computers to learn.
( )3. Mike can use pens, paper and books to learn.
( )4. Mike wants to draw a line with a ruler.
( )5. Amy has some rulers.

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