We say "should" to express a recommendation.
you should do something = it is a good idea to do that, I recommend it
you should not do something = it is a bad idea to do that, you'd better not do so
"Should" is less strict than "must", it is a recommendation and not an obligation.
It's an interesting video. You should watch it.
You should always check the data when you're buying a flight ticket.
You shouldn't smoke so much.
Remember: should + infinitive
|Positive and negative|
I should work harder.
John should be more attentive.
You shouldn't take it close to heart.
We shouldn't take another loan.
Should I see the doctor?
What should they do now?
We often use "should" together with "think" when we express our opinion or ask for advice:
I think ... should …
I don’t think … should …
Do you think … should…?
I think you should change your job.
I think I should buy that phone.
I don't think you should care about it.
I don't think Richard should study abroad.
Do you think I should apologize?
Do you think we should call a taxi now?