could的用法总结归纳

例句：

His contribution could be key.

他的贡献可能是最重要的。

He could always smell out fear.

别人有什么恐惧，他总能觉察到。

This could set a new fashion.

这或许会开创一种新时尚呢。

Could I have your autograph?

我能请你签个名吗？

She could feel herself blushing.

她可以感到脸都红了。