could

aux.

“can”的过去式；能够，打算；用于假设语气的条件句；用于虚拟语气的结论句

could be可能是；有可能

could have本能够；本来也可以

how could i我怎么能；我如何能够

could have done本来能做成的（却没做成）

nobody could没人能做到；那么别人也休想

could not help禁不住，忍不住

could break可能破碎

could do with需要；将就；能对付

could not but不得不…

so how could i我又怎么能够

1. We could relax the procedure slightly in your case.
   我们可以根据你的情况通融一些。
2. Could this verb be used in progressive form?
   这个动词可以用进行式吗？
3. I can't sing now, but I could when I was young.
   现在我不会唱歌了，但我年轻的时候会。
4. The exam results could determine your career.
   考试成绩可能会决定你的前途。

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