should的原形是should：modal(常用于纠正别人)应该，应当;(提出或征询建议)该，可以;(表示预期)应该会，可能

相关介绍

例句：

You should not go out in the heat of the day.

你不应该在天最热的时候外出。

I think you should go back to your original plan.

我认为你应该回头执行你原来的计划。

The new trade agreement should facilitate more rapid economic growth.

新贸易协定应当会加快经济发展。

Students should aim to become more independent of their teachers.

学生应该努力逐渐减少对老师的依赖。