shoud 和could的用法
详细点
参考答案:should
v.aux.
1. (shall的过去式,表示过去将来)将
We hoped that we should be able to do that.
我们希望我们能这样做。
2. (表示语气较强的假设)万一,竟然
If the car should break down on the way, you would have to walk back.
万一汽车中途抛锚,你就得走回来。
3. (表示可能性、推测、推论或期待)可能,该
She should be here any minute.
她该马上就到。
Dinner should be ready by now.
此刻晚饭应该做好了。
4. (表示义务、责任)应该,应当
You should do as she says.
你应当照她说的去做。
He should work harder.
他应该更加努力。
You should help your mother with the housework.
你应该帮你母亲做家务。
5. (表示委婉、谦逊)可,倒
6. (表示感情、意志等)竟然会;应该
I'm sorry it should be this way.
很遗憾,事情竟会是这个样子。
It's strange that he should be absent.
真奇怪,他竟会缺席。
You shouldn't have told him about it.
你不该把这件事告诉他的。
7. (表示建议、命令、决定等)应该,必须
Crime should be punished.
犯罪应受惩罚。
8. (表示目的)会,可以
He stood away so that we should enter the room first.
他让开一步,让我们先进屋。
9. (表示结果、意愿等)就,该
10. (表示征求同意等)可以,该
Who should I see about my schedule?
关于我的日程该和谁商讨?
could
v.aux.
1. can的过去式
She could play the violin when she was five.
她五岁时便能拉小提琴了。
2. (用于虚拟语气,表示与事实相反的设想)能,可以
I wish I could go to France.
但愿我能去法国。
I would go if I could.
能去我就去。
3. (表示可能性)可能
That could be my train.
那可能是我要乘的火车。
4. (用于婉转语气)能,可以
Could I smoke here?
我可以在这里抽烟吗?
Couldn't you try it again?
你可否再试一下?