1. should作情态动词
The group leader announced that we should begin to work soon.
小组长宣布我们不久就开始工作。
A week ago, I told him that I should go to Beijing the next day.
一个星期以前，我告诉他我第二天就去北京。
I thought I should go to school by bike.
我认为我应该骑自行车上学。
He should do it at once.
他应该立即去做这件事。
2. should+not缩写为shouldn't
I should not tell you the event.
我不应该告诉你这件事情。
We shouldn't ask such questions.
我们不应该问这样一些问题。
He should not pick up the wallet.
他不应该捡这个钱包。
They shouldn't get the honor.
他们不应该获得这项荣誉。
3. would+动词原形
He said he would come.
他说他要来。
He would eat nothing.
他什么也不愿吃。
She told him not to go, but he would listen to me.
她叫他别去，可他偏听我的。
He would go in spite of our warnings.
尽管我们警告他了，但他执意要去。
4. would+not 缩写为 wouldn't
I would not attend the meeting.
我不参加那个会议。
He wouldn't listen to you.
他不听你的。
We would not go to the cinema.
我们不去看电影。
I wouldn't report it to her.
我不会把这件事反馈给她。