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译林版-三下（新版）Unit3-4-语法讲练测
【核心语法】
一、祈使句的否定与肯定形式
知识点：
1. 否定祈使句：
1) Don't+动词原形（或be动词）+其他成分
行为动词开头：这类句式多用于禁止具体动作。
例句：Don't touch the wet paint.（别碰未干的油漆。）
Don't forget to turn off the lights.（别忘了关灯。）
2) be动词开头：此类句式常用于表达对状态或态度的禁止，例如提醒他人避免
某种持续性行为。
例句：Don't be noisy in the library.（不要在图书馆喧哗。）
Don't be afraid of making mistakes.（不要害怕犯错。）
3) Let+宾语+not+动词原形
这是在动词原形前加“not”构成的否定句，语气较委婉。
例句：Let him not come in.（别让他进来。）
Let the children not jump on the bus.（别让孩子们在汽车上跳跃。）
4) 祈使句的否定形式还有一种常见的是“No+名词/动词-ing形式”，这类祈使
句一般表示禁止或规劝的含义，用于警示人们不许做某事。
例如：“No Parking.”（禁止停车。）或“No smoking.”（禁止吸烟。）
2. 肯定祈使句：
结构：动词原形开头（例：Close the door.）或 Let’s + 动词原形（例：Let’s
follow the rules.）
易错点：在 Let’s 后加 to（如错误句子 Let’s to play.）
练习题：
1. ______ eat in the library. (Don’t/Not)
2. 改错：No run in the classroom!
_____________________________________
3. 连词成句：your / desk / draw / on / don’t / .
_____________________________________
4. 翻译：请保持安静！
_____________________________________
5. —Let’s play hide-and-seek! —______ (Good idea!/No, thanks.)
6. ______ (Don’t/Not) look out of the window.7. 改错：Let’s not to shout in class.
_____________________________________
8. —______ talk in the library. —OK.
A. Don’t B. Not C. No
9. 翻译：不要在课桌上画画。
_____________________________________
10. 连词成句：follow / rules / let’s / the / .
_____________________________________
二、方位介词
知识点：
1. 常见介词：
behind（在……后），by（在……旁），under（在……下），
on（在……上），in front of（在……前）
2. 易错点：
1) 混淆 by 与 near（by 表示紧挨，near 表示附近）
2) 错误使用 in the tree（外来物）与 on the tree（树上生长的）
练习题：
1. The cat is ______ (under/on) the chair.
2. 改错：The book is in front the desk.
_____________________________________
3. 连词成句：butterfly / the / by / tree / is / the / .
_____________________________________
4. 翻译：我的飞机在花丛中。
_____________________________________
5. 选择：—Where is the ruler? —It’s ______ the desk.
A. by B. on C. under
6. 填空：The ball is ______ (在……后面) the door.
7. 改错：The apples are in the tree. (假设苹果是长在树上的)
_____________________________________
8. 翻译：不要站在黑板前面。
_____________________________________
9. 连词成句：flowers / the / in / plane / is / the / .
_____________________________________
三、特殊疑问句 Where 的用法知识点：
1. 句型结构：
Where is/are + 主语? → 回答用方位介词短语（例：Where is my pen? It’s under
the book.）
2. 易错点：
混淆 Where is（单数）与 Where are（复数）（如错误句子 Where is the
pencils?）
练习题：
1. —______ are the crayons? —They’re in the box.
2. 改错：Where is your books?
_____________________________________
3. 连词成句：the / where / butterfly / is / ?
_____________________________________
4. 翻译：你的书包在哪里？
_____________________________________
5. 填空：—Where ______ (is/are) the students? —They’re in the playground.
6. 选择：—______ is the cat? —It’s behind the door.
A. What B. Where C. How
7. 翻译：我们的美术社团在花园旁边。
_____________________________________
8. 连词成句：plane / my / where / is / ?
_____________________________________
9. 改错：Where are the pencil?
_____________________________________
四、情态动词 can 的否定与疑问
知识点：
1. 否定句：can’t + 动词原形（例：We can’t eat here.）
2. 疑问句：Can you...? → 回答 Yes, I can./No, I can’t.
3. 易错点：
在 can 后加动词不定式（如错误句子 I can to read.）
练习题：
1. —______ you play outside? —Yes, I can.
2. 改错：She can’t draws on the desk.
_____________________________________3. 翻译：我们不能在图书馆跑步。
_____________________________________
4. 连词成句：the / clean / can / blackboard / you / ?
_____________________________________
5. 填空：I ______ (can/can’t) find my ruler. It’s lost.
6. 选择：—Can we eat in class? —______
A. Yes, we can. B. No, we can’t.
7. 翻译：你会画蝴蝶吗？
_____________________________________
8. 改错：Can he to close the window?
_____________________________________
9. 连词成句：run / don’t / can’t / we / here / .
_____________________________________
10. 选择：—______ can you see? —A beautiful flower.
A. What B. Where C. How
【考点精炼】
一、单项选择（共10题）
（ ）1. —Don’t ______ in the library.
—OK.
A. run B. running C. runs
（ ）2. The cat is ______ the table.
A. behind B. in C. between
（ ）3. —______ is your pencil case?
—It’s on the desk.
A. What B. Where C. How
（ ）4. —Can I eat here?
—No, you ______.
A. can B. can’t C. don’t
（ ）5. —Let’s play football!
—______!
A. Good idea B. No, thank you C. Don’t run
（ ）6. —Where ______ my crayons?
—They’re in the box.
A. is B. am C. are（ ）7. —______ shout in class!
—Sorry, Miss Li.
A. Don’t B. Not C. No
（ ）8. The apples are ______ the tree.
A. in B. on C. under
（ ）9. —What’s ______ the chair?
—It’s a ball.
A. behind B. by C. for
（ ）10. —______ your brother like swimming?
—Yes, he does.
A. Do B. Does C. Is
二、填空题（共10空）
1. Don’t ______ (draw) on the desk.
2. The butterfly is ______ (在……旁边) the flowers.
3. —Where ______ (be) the robots?
—They’re under the chair.
4. We can’t ______ (eat) in the library.
5. Let’s ______ (follow) the school rules.
6. My schoolbag is ______ (在……下面) the table.
7. —______ (不要跑) in the classroom!
8. The bird is ______ (在……里) the tree now.
9. —Can you ______ (clean) the blackboard?
—Yes, I can.
10. —Where is the lunch box?
—It’s ______ (在那里).
三、连词成句（共5题）
1. don’t / the / draw / desk / on / .
____________________________________
2. is / where / the / butterfly / ?
____________________________________
3. can’t / we / here / run / .
____________________________________
4. your / is / schoolbag / where / ?
____________________________________5. let’s / outside / play / .
____________________________________
四、阅读理解（共2篇，每篇5题）
A. School Rules
Hello! I’m Lucy. Our school has many rules. Don’t run in the classroom. Don’t eat
in the library. Keep quiet in class. We can play games after school. Let’s follow the
rules!
根据短文判断正误（T/F）：
1. ( ) We can run in the classroom.
2. ( ) Don’t eat in the library.
3. ( ) We must shout in class.
4. ( ) We can play games after school.
5. ( ) Lucy likes school rules.
B. Fun After Class
Today is Friday. After class, Tim and Amy play hide-and-seek. Tim hides behind
the door. Amy hides under the table. “Where are you?” Tim asks. “I’m here!” says
Amy. They are very happy.
根据短文选择正确答案：
（ ）1. What day is today?
A. Monday B. Friday C. Sunday
（ ）2. Where does Tim hide?
A. Behind the door B. Under the table C. In the tree
（ ）3. What game do they play?
A. Football B. Hide-and-seek C. Basketball
（ ）4. Is Amy under the chair?
A. Yes B. No C. Not mentioned
（ ）5. How do they feel?
A. Sad B. Angry C. Happy
答案与解析
【核心语法】
一、祈使句
1. Don’t
2. Don’t run in the classroom!
3. Don’t draw on your desk.4. Keep quiet, please!
5. Good idea!
6. Don’t
7. Let’s not shout in class.
8. A
9. Don’t draw on the desk.
10. Let’s follow the rules.
二、方位介词
1. under
2. The book is in front of the desk.
3. The butterfly is by the tree.
4. My plane is in the flowers.
5. C
6. behind
7. The apples are on the tree.
8. Don’t stand in front of the blackboard.
9. The plane is in the flowers.
三、特殊疑问句 Where
1. Where
2. Where are your books?
3. Where is the butterfly?
4. Where is your schoolbag?
5. are
6. B
7. Our Art Club is by the garden.
8. Where is my plane?
9. Where is the pencil?
四、情态动词 can
1. Can
2. She can’t draw on the desk.
3. We can’t run in the library.
4. Can you clean the blackboard?
5. can’t
6. B7. Can you draw a butterfly?
8. Can he close the window?
9. We can’t run here.
10. A
【考点精炼】
一、单项选择
1. A 2. A 3. B 4. B 5. A
2. C 7. A 8. B 9. A 10. B
二、填空题
1. draw 2. by 3. are 4. eat
5. follow 6. under 7. Don’t run
8. in 9. clean 10. over there
三、连词成句
1. Don’t draw on the desk.
2. Where is the butterfly?
3. We can’t run here.
4. Where is your schoolbag?
5. Let’s play outside.
四、阅读理解
A篇：1. F 2. T 3. F 4. T 5. T
B篇：1. B 2. A 3. B 4. B 5. C
