You shouldn't watch tv so much.
should + infinitive
(should do / should watch etc. ):
do
i/we/you/they
should stop
he/she/it
shouldn't go
watch etc.
b you should do something = it is a good thing to do, it is the right thing to do:
tom doesn't study enough. he should study harder.
o it's a good film. you should go and see it.
when you play tennis, you should always watch the ball.
c
you shouldn't do something = it is not a good thing to do.
shouldn't = should not:
tom shouldn't go to bed so late.
d you watch tv all the time. you shouldn't watch tv so much.
we often say i think should
i think should :
0 i think lisa should buy some new clothes.
do you think i
should buy this hat?
(= i think it is a good idea. )
o it's late. i think i should go home now.
a: shall i buy this coat?
b: yes, i think you should.
i don't think should
i don't think you should work so hard.
(= i don't think it is a good idea. )
i don't think we should go yet. it's too early.
do you think should
do you think i should buy this hat?
c what time do you think we should go home?
must is stronger than should:
o it's a good film. you should go and see it.
o it's a fantastic film. you must go and see it.
another way to say should is ought to:
it's a good film. you ought to go and see it. (= you should go)
i think lisa ought to buy some new clothes. (= lisa should buy)
shall units 27-28 must unit 31