You should do your homework before going out to play.
should have
Frequency:
75
%
I should have studied more for the exam.
should be
Frequency:
70
%
You should be more careful when crossing the street.
should not
Frequency:
65
%
You should not eat too much junk food.
should go
Frequency:
60
%
We should go to the movies this weekend.
Idiomatic Expressions for should
Phrase: should have known better
Meaning: to express regret or disappointment for making a mistake
Usage: I should have known better than to trust him with my secret.