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Unit 1 Animal friends
语法专题：（情态动词can/一般现在时三单/名词单复数）
一、核心语法 —— 知识点精讲（学生必背）
1. 情态动词can的用法（核心必考）
用法：表示动物或人“能、会”做某事（表能力）；也可表示委婉请求“能……吗”。
标志词：can, can’t, be able to（同义替换，简单掌握）
结构：
肯定：主语 + can + 动词原形 + 其他
否定：主语 + can’t （can not的缩写） + 动词原形 + 其他
疑问：Can + 主语 + 动词原形 + 其他？ （回答：Yes, 主语 + can. / No, 主语 + can’t.）
例句：
① The bird can sing.（肯定句：这只鸟会唱歌。）
② The cat can’t swim.（否定句：这只猫不会游泳。）
③ —Can the dog run fast —Yes, it can.（疑问句及回答：这只狗能跑得快吗？是的，它能。）
2. 一般现在时（第三人称单数）用法（重点必考）
用法：表示动物或人经常性、习惯性的动作，或客观事实（描述动物外形、习性）。
标志词：often, usually, always, every day, every morning
主语分类：
第三人称单数：he, she, it, 单数动物名词（the dog, a panda）
非第三人称单数：I, we, you, they, 复数动物名词（dogs, pandas）
结构：
肯定：主语（三单） + 动词-s/-es + 其他；主语（非三单） + 动词原形 + 其他
否定：主语（三单） + doesn’t + 动词原形 + 其他；主语（非三单） + don’t + 动词原形 + 其他
疑问：Does + 主语（三单） + 动词原形 + 其他？（回答：Yes, 主语 + does. / No, 主语 + doesn’t.）
动词-s/-es变化规则（3条，简单易懂）：
1. 一般 + s：play → plays, eat → eats, have → has
2. 以s, x, ch, sh, o结尾 + es：watch → watches（本单元暂不重点考查，简单了解）
3. 以辅音字母 + y结尾，变y为i + es：fly → flies
例句：
① The panda eats bamboo every day.（三单肯定句：这只熊猫每天吃竹子。）
② My pet dog doesn’t like cats.（三单否定句：我的宠物狗不喜欢猫。）
③ —Does the rabbit have long ears —Yes, it does.（三单疑问句及回答）
3. 名词单复数（易错重点）
用法：表示数量，单数表示“一个”，复数表示“多个”（描述多种动物或多只动物）。
变化规则（3条，贴合本单元词汇）：
1. 一般 + s：dog → dogs, bird → birds, panda → pandas
2. 单复数同形：fish → fish（一条鱼a fish，多条鱼two fish）
3. 注意：how many（多少）后面必须接复数名词
例句：
① There is a cat in the room.（单数：房间里有一只猫。）
② There are three dogs in the garden.（复数：花园里有三只狗。）
③ How many birds are there in the tree （复数：树上有多少只鸟？）
4. 常用句型（贴合本单元话题，必考）
What can the animal do It can…
What does the animal look like It has…（结合三单）
Does the animal have… Yes, it does. / No, it doesn’t.
How many animals are there There are…（结合复数）
二、核心语法 —— 专项练习题（基础 + 提高）
一、用所给动词的正确形式填空
1. The parrot __________ (can) speak a few English words. It’s very clever.
2. My mother __________ (feed) the fish every morning.
3. Look! The dog __________ (run) after a cat.
4. —What __________ the panda __________ (eat) every day —It eats bamboo.
5. The rabbit __________ (not have) a long tail. It has a short one.
6. —Can the bird __________ (fly) high —Yes, it can.
7. They __________ (have) a pet cat. It’s very cute.
8. The fox __________ (have) a long tail and lives in the forest.
9. We __________ (not can) hurt animals. They are our friends.
10. —What does your sister __________ (do) for her pet —She feeds it every evening.
二、单项选择
( ) 1. —__________ the bird sing —Yes, it can.
A. Can B. Does C. Do
( ) 2. My pet dog __________ long ears and a short tail.
A. have B. has C. is having
( ) 3. —What __________ you do —I can feed the fish.
A. can B. do C. does
( ) 4. There are two __________ in the zoo. They are very lovely.
A. panda B. pandas C. panda’s
( ) 5. —Does your brother have a pet —No, he __________.
A. doesn’t B. can’t C. don’t
( ) 6. The bird __________ sing, but it can fly high.
A. can B. can’t C. doesn’t
( ) 7. He __________ a pet parrot. It can speak English.
A. have B. has C. is
( ) 8. —How many __________ are there in the cage —Three.
A. bird B. birds C. bird’s
( ) 9. My sister __________ like dogs. She likes cats.
A. doesn’t B. don’t C. can’t
( ) 10. —Can you __________ the pet —Yes, I can. I feed it every day.
A. feed B. feeds C. feeding
三、句型转换
1. The dog can run fast.（否定句）The dog __________ __________ run fast.
2. He has a pet rabbit.（一般疑问句）__________ he __________ a pet rabbit
3. The bird can sing.（对划线提问）__________ __________ the bird __________
4. They have two pet dogs.（否定句）They __________ __________ two pet dogs.
5. The panda eats bamboo every day.（对划线提问）__________ __________ the panda __________ every day
6. Can the cat climb trees （肯定回答）Yes, __________ __________.
7. The rabbit has long ears.（一般疑问句）__________ the rabbit __________ long ears
8. There is a fish in the bowl.（复数句）There __________ two __________ in the bowl.
四、用can/can’t, do/does, have/has填空
1. I __________ a pet cat. It __________ run fast.
2. —__________ the bird fly —Yes, it can.
3. He __________ not like tigers. He likes pandas.
4. The panda __________ black and white fur. It’s very cute.
5. They __________ have a pet dog. They have a pet bird.
6. —__________ you feed the fish —Yes, I can.
7. The fox __________ a long tail. It __________ climb trees.
参考答案
一、用所给词的适当形式填空
1. can 2. feeds 3. run 4. does; eat 5. doesn’t have 6. fly 7. have 8. has 9. can’t 10. do
二、单项选择
1.A 2.B 3.A 4.B 5.A 6.B 7.B 8.B 9.A 10.A
三、句型转换
1. can not 2. Does; have 3. What can; do 4. don’t have 5. What does; eat 6. it can 7. Does; have 8. are; fish
四、用can/can’t, do/does, have/has填空
1. have; can 2. Can 3. does 4. has 5. don’t 6. Can 7. has; can

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