be able to和canI went there in 1984,and that was the only occasion when I ________ the journey in exactly two days.A.must take B.must have madeC.was able to make D.could make

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be able to和can
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

选C
be able to 是经过努力所能达到的能够,无被动语态,通常句式前会有很多词做铺垫,像例句,“我是1984年去的那里,那也就是当时唯一的机会,我能够恰好2天抵达”
can 强调力所能及,表示体力或脑子方面的能力,或是具备某种客观条件能做某种动作的“能力”,只有现在和过去两种形式,其他时态则需要用be able to 来表示

选C吧,读着通顺些

be able to是指有能力做某事。通常指客观事件
can指能做某事,通常用于主观事件。

be able to 是有能力成功做成一件事,有各种时态;
can 也是有能力,但是没有表现出成功完成一件事的意思,只有现在时和过去时。

选C。
can和be able to 都能够表示【有能力、能够做某事】,在一般现在时里可以互换。
但是,在表示【过去有能力做某事,或经过拼搏、努力等做到某事】,只能用 be able to的变形
was/were able to.例如:
The house was on fire then,but fortunately,we all were able to ru...

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选C。
can和be able to 都能够表示【有能力、能够做某事】,在一般现在时里可以互换。
但是,在表示【过去有能力做某事,或经过拼搏、努力等做到某事】,只能用 be able to的变形
was/were able to.例如:
The house was on fire then,but fortunately,we all were able to run out of it .
祝你开心如意!

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