be able to和can的区别I went there in 1984,and that was the only occas_英语解答

be able to和can的区别
I went there in 1984,and that was the only occasion when I ________ the journey in exactly two days.
A.must take
B.must have made
C.was able to make
D.could make
C D的区别?

人气：348 ℃　时间：2019-10-19 04:31:34

解答

can 和be able to 都可以表示能力.can泛指一般的能力,而且只有两种形式,即:can,could．be able to 则主要指具体做到了某件事的能力,其形式主要是靠be 发生变化,所以形式比can 多．可以说：I can swim.I am able to s...