内容正文:
七年级上册Unit 5 Fun Clubs语法总结
情态动词 can 表示能力
一、基本概念
情态动词 can 用于表达能力(能做某事)、可能性或请求许可。本单元重点学习 can 表示个人能力的用法。
特点:
· 无人称和数的变化(主语是单数/复数均用 can)
· 后接动词原形(不加 to)
· 否定形式:cannot / can't
· 疑问形式:将 can 提前至句首
二、用法与例句
句型
功能
结构
示例
肯定句
表示有能力做某事
主语 + can + 动词原形
• I can play the piano. (我会弹钢琴)
• She can speak French. (她会说法语)
否定句
表示没有能力做某事
主语 + cannot/can't + 动词原形
• He can't swim. (他不会游泳)
• They cannot dance. (他们不会跳舞)
一般疑问句
询问对方能否做某事
Can + 主语 + 动词原形?
• Can you draw? (你会画画吗?) → Yes, I can. / No, I can't.
• Can the dog jump? (这只狗会跳吗?)
特殊疑问句
询问具体能力
疑问词 + can + 主语 + 动词原形?
• What can you do? (你会做什么?)
• Where can she play tennis? (她能在哪里打网球?)
三、使用规则与注意事项
1. 动词原形:can 后必须用动词原形(如 sing, run),不可加 to 或 -ing。
> 错误:She can to swim. / He can playing chess.
> 正确:She can swim. / He can play chess.
2. 否定缩写:cannot 可缩写为 can't(口语和书面语均常用)。
> They can't ride a bike.
3. 回答疑问句:
· 肯定回答:Yes, 主语 + can.
· 否定回答:No, 主语 + can't.
> — Can you cook?
> — Yes, I can. / No, I can't.
4. 与Unit 4连词结合:
• 用 and/but/or 连接多个能力:
> I can sing and dance. (我会唱歌和跳舞)
> She can paint but she can't draw. (她会画画但不会素描)
> Can you play basketball or football? (你会打篮球还是踢足球?)
练习1:用 can / can't 填空
1. My brother ________ swim very well.
2. We ________ speak Japanese, but we ________ speak English.
3. ________ your sister play the guitar?
4. The bird ________ fly, but it ________ run fast.
5. I ________ ride a bike because I’m only 5 years old.
练习2:连词成句
1. chess / can / play / you / ?
→ ___________________________
2. can’t / they / in / swim / the river
→ ___________________________
3. what / do / can / for / I / the club ?
→ ___________________________
4. sing / she / dance / and / can
→ ___________________________
5. can’t / the piano / he / play / but / he / can / the drums / play
→ ___________________________
练习3:根据答句写问句
1. — ___________________________?
— Yes, my dog can climb trees.
2. — ___________________________?
— I can join the art club.
3. — ___________________________?
— No, Tom can’t play volleyball.
练习答案
练习1:
1. can 2. can't, can 3. Can 4. can, can't 5. can't
练习2:
1. Can you play chess?
2. They can't swim in the river.
3. What can I do for the club?
4. She can sing and dance.
5. He can't play the piano, but he can play the drums.
练习3:
1. Can your dog climb trees?
2. What club can you join? / What can you do for the club?
3. Can Tom play volleyball?
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