could后面加什么时态

问题描述

精选答案

could 后跟动词原型，例如：Her parents could hear(hear)the children say "happy birthday to you!她父母能听到孩子们对她女儿说生日快乐

相关介绍：

This could cause serious damage to the country's economy.

这可能对国家的经济造成严重破坏。

The database could be used as a teaching resource in colleges.

数据库可以用作大学里的一种教学辅助手段。

I think we could all use a drink after that!

我想我们在事情办完之后都得痛快地喝一杯。

He could just make out three people through the mist.

透过薄雾他勉强能看出有三个人。

The operation could prolong his life by two or three years.

这次手术可使他多活两三年。