Is you a conjunction

We use should most commonly to talk about what is the ideal or best thing to do in a situation:

There should be more public hospitals.

They should reduce the price of petrol.

It’s so expensive.

There should be four more candles on the cake.

We use should have + -ed form to talk about things that were ideal in the past but which didn’t happen.

It can express regret:

Everyone knows that this is a busy restaurant.

Conjunction words

Is of a conjunction or preposition

Is there a conjunction

Conjunction examples

Is but a conjunction

They should have made a reservation.

I should have studied harder when I was young. I wish I had gone to college.

We often use should to give advice and make suggestions:

You should tell him what you think.

We should leave it until tomorrow; it’s late now.

We also use should to talk about what is likely to happen:

Shall we start?

Luke’s delayed but he says he should be here in ten minutes.

There should be a very big crowd at the party. Mary has so many friends.