could的用法總結歸納

例句：

His contribution could be key.

他的貢獻可能是最重要的。

He could always smell out fear.

別人有什麼恐懼，他總能覺察到。

This could set a new fashion.

這或許會開創一種新時尚呢。

Could I have your autograph?

我能請你籤個名嗎？

She could feel herself blushing.

她可以感到臉都紅了。