情态动词解析: 情态动词的should的用法( 二 ) _情态

相反的：
Tom shouldn't go to bed so late.
Tom 不应该那么晚才睡觉。
You should read more books, and shouldn't watch so much TV.
你应该多读些书，不应该看太多电视。
我们也可以用ought to同等替换should 。就像上面的例子：
You should read more books
=You ought to read more books.
你应该多读些书。
It's a good film, you should go and see it.
=It's a good film, you ought to go and see it.
这是部好电影，你应该去看一看。
总结出来就是：
可能发生，may & might同等互换
可以做，现在用can，过去用could
必须做，现在用must，过去用had to；强调个人意见用must，客观事实用have to
应该做不做，就用should 和 shouldn't