Firemen had been fighting the forest fire before they could

Firemen had been fighting the forest fire before they could get it under control.
这句话里could能够换成be able
霜漩流 1年前 已收到2个回答 举报

曾经沧海永为水 幼苗

共回答了19个问题采纳率:78.9% 举报

可以呀!下边是两者的区别:1)can could 表示能力;可能 (过去时用could),只用于现在式和过去式(could).be able to可以用于各种时态.They will be able to tell you the news soon.他很快就能告诉你消息了.2)只用be...

1年前

4

叶孤鸿1977 幼苗

共回答了14个问题 举报

可以的。were able to = could

1年前

1
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