情态动词should 的用法 1. should do “ 表现在可将来 ” should have done “ 表过去” 应 该 与ought to 用法相当，但不如 ought to 语气强 。 We should learn about the computer and make full use of it. 我们应该了解计算机并加以充分利用。 You should listen to the doctors advice. 你应当听大夫的话。 I should have finished my work. 我应该做完我的工作。（实际上还没有做完）但当表示“ 应该” 时，should 更侧重自己主观的看法， 而且 ought to 更着重客观的情况。 We should ( ought to ) go and see Mary sometime. We ought to ( 不用 shoud) go and see Mary tomorrow, but I dont think we will have time.mustnt, shouldnt had better no
