used to say what is right or expected
You should always tell the truth.
你應該永遠說實話。
used to give advice
You should try to get more sleep.
你應該試著多睡一會兒。
used to say what you expect to happen
The package should arrive tomorrow.
包裹應該明天到達。
used to say something expected did not happen
It should be sunny now, but it's raining.
現在應該是晴天,但卻在下雨。
past form of shall in reported speech
She asked what time she should come.
她問她應該什麼時候來。
used after that in suggestions
He suggested that I should visit the museum.
他建議我應該參觀博物館。
used to give uncertain opinions
I should think the meeting will be short.
我想會議應該會很短。
used to show strong agreement
You should agree that this is important.
你應該同意這很重要。
used to show surprise or annoyance
Who should I see but my old teacher!
我竟然看到了我的老老師!
used to tell about something surprising
You should have seen how happy she was.
你真該看看她當時有多開心。
used after feeling words
It's strange that he should say that.
他竟然說那種話,真奇怪。
used in polite requests
I should like to ask a question.
我想請教一個問題。
used instead of would in some cases
If I lost my job, I should look for a new one.
如果我失業了,我會找一份新工作。
used to talk about possible events
If you should need help, just call me.
如果你需要幫助,就給我打電話。