can 和 can't
S + can / cannot + V0表示能力,也用来请求许可或请人帮忙。can 后面永远不加 -s,后面的动词一律用原形。 常见错误:He cans ✗,He can ✓。也不要加 to:I can to swim ✗,I can swim ✓。
I can swim.
我会游泳。
She can speak three languages.
她会说三种语言。
I can't come tomorrow.
我明天来不了。
Can you help me?
你能帮我吗?









