could 和was able to 的区别?

could 和was able to 的区别? could和be able to的区别 could & was/were able to do 的区别 could,was able,managed to,succeedin的区别 be able to和could表示过去实际上可以做到的事时只用was/were able to不用could那这个怎么解释I was able to speak English中的 was able to 可以换成could求精简的解释,注意针对问题回答 can,could和be able to的区别 could和was able to和manage to有什么区别?could，be able to，manage都表示已经做成某事？ was able to的同义词 be able to、can、could的区别 can/could和be able to在这两个句子里的区别,为什么不能替换为什么 after a lot of studying,he was able to pass the exam 和 despite the bad weather,the climber were able to reach the top by noon这两个句子里的be able to不能 how brave he was!he was able to swim across the river in such a bad weatherA.could B.was able to C.might D.should为什么不选A?could不是也有能力的意思吗? be able to 和can的区别The chemist was open,so luckily I ( ) buy some aspirin.A.can B.was able to我问一下如果把A改成could是不是就行了be able to 不是指有能力做某事吗?为什么可能用的这里啊,这里的空格好像意 Michael______come.That's too bad.I thought he could comeA.isn' able to b.is able to C.wasn't able to d.was able to He was able to run away before the war broke out.可否将 was able to 改为could为什么? Could you please tell me if he ___finish the work on time A.could B.was able to C.is able to D.would be able to ,为什么? He could speak English.与 He was able to speak English.两句英文句子的区别在哪里? could you tell me if he_______finish the work on time?A.could B.was able to C.is able to D.would be able选哪个?为什么? 关于英语词组的用法be able to和could有什么区别?