用法总结:
1、We can use can to talk about ability.
用 “can” 表 “能力”。
I can play the guitar
I can speak Spanish, but I can’t fly.
2、We can use can to ask for or give permission to do something.
用 “can” 表 “请求或给予许可”。
Can I open the window, Elly?
No, you can’t! It’s too cold!
Can I go for lunch, Elly?
Yes, of course you can, James!
3、We can use can to talk about possibility.
用 “can” 表 “可能性”。
Learning a language can be difficult.
Elly, take a jacket! It can get cold at night!