Unit 5语法情态动词can2025-2026学年人教版英语七年级上册
Unit 5语法:情态动词can
can是情态动词,无人称和数的变化(无论主语是I/you/he/they,can都保持原形),且后必须接动词原形 。
描述主语(人/物)具备的技能、本领,翻译为“能、会”。
• 肯定句:主语 + can + 动词原形 + 其他
例:I can play the guitar.(我会弹吉他)
• 否定句:主语 + can’t(=can not) + 动词原形 + 其他
例:She can’t swim.(她不会游泳)
• 一般疑问句:Can + 主语 + 动词原形 + 其他?
回答:Yes, 主语 + can. / No, 主语 + can’t.
向对方提出委婉的请求,翻译为“可以、能”,常用于口语/申请场景。
• 请求自己做某事:Can I/we + 动词原形 + 其他?
例:—Can I join the music club?(我能加入音乐俱乐部吗?)
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• 请求对方做某事:Can you + 动词原形 + 其他?
表示客观上的可能性,翻译为“可能、会”,常用于否定句/疑问句表“推测”。
• 否定句(表“绝对不可能”):主语 + can’t + 动词原形 + 其他
例:He can’t be in the art club.(他不可能在美术俱乐部)
主动向对方提供帮助,翻译为“可以、能”。
• 主动帮忙:I can + 动词原形 + 其他
例:I can help you make the club poster.(我可以帮你做俱乐部海报)
- can后必须接动词原形;
- can’t是can的否定形式;
- can侧重“先天/当下能力”,be able to侧重“后天习得的能力”(七年级了解)。
专项习题
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- My dad ______ drive a car, but he ______ ride a bike.
- ______ you speak Japanese? I need help with the club’s international activity.
- A rabbit ______ run fast, but it ______ fly.
- ______ I use the club’s computer to print the poster?
- It ______ snow tonight—let’s check the weather before the club trip.
- We ______ finish the club’s decoration in an hour if we work together.
- She ______ be in the library—her bag is still in the club room.
- ______ you pass me the glue? I’m making the club’s notice board.
- The baby ______ walk yet, but he ______ crawl.
- I ______ play the drums, so I want to join the school band club.
- ______ your sister swim? She can join the swimming club if she can.
- Birds ______ fly, but dogs ______.
- ______ we eat snacks in the club room?
- He ______ be late—he left home an hour ago.
- My mom ______ cook delicious food, but she ______ bake cakes.
- ______ you help me practice the club’s English dialogue?
- Fish ______ live without water—so we can’t take them out of the tank.
- ______ I borrow the club’s basketball for the weekend?
- They ______ speak French, so they can help with the club’s exchange activity.
- The little girl ______ read, but she ______ write.
- He can play chess.(改为一般疑问句,表能力)
_________________________________________________________________
- I can join the chess club.(改为否定句,表请求许可)
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