should / ought to

责任；义务(应该；理应)

We should be/ought to be honest. 我们应该诚实。

You should/ought to stop smoking. 你应该戒烟。

We should/ought to give a hand to our friends who are in trouble.

朋友有困难我们应该帮忙。

We should not/ought not to put the valuables at home.

我们不该把贵重物品放在家里。

You should not/ought not to cross the street when the light is red.

红灯亮的时候你不该过街。

Should we/Ought we to invite Nina to the party?

我们该邀请Nina参加派对吗？