can [ kæn ] v. / aux. 能、会 n. 罐、罐头

1. as ... as can be ……得不能再……、极为……

2. can't be better 再好不过了

can / be able to 都有“能”的意思。

can 通常用来表示本身具有的能力，即随时想做就能做到的某种能力，但它没有将来、完成等时态变化形式。

be able to 可用更多时态形式，因此必要时可用shall / will be able to, have/ has / had been able to等形式。

· She can lift me up with one hand.

她能用一只手把我举起来。

· Shall you be able to finish your work tomorrow?

你的工作明天能做完吗？

· He has not been able to go to work for five days.

他已经五天没去上班了。

Q The rice was sent here by ______.

1. canal 2. candle 3. cane