GRAMMAR SUBJUCTIVE AND MODALS

GRAMMAR SUBJUCTIVE AND MODALS

[/su_slider]

It + be + adjective + that

Adjectives such as necessary , important , vital , crucial, essential are also used to show what is impotant or necessary , instead of using must/haveto/need:

You must turn it ff after use.

It is vital that you turn it off after use

The subjuctive form of the verb ( without – s form ) or the usual third person – s form can be used in formal writing:

It is important that the meeting come/comes to a decision.

Recommendation : should , ought to, had better

Should / shouldn’t and ought to/ ought not to are used when we think something is a good idea , or not a good idea, or when we say what we think is the right thing to do:

More people should cycle to work.

They shouldn’t drive everywhere.

I think you ought to ask the director for some advice.

There is no difference between should and ought to. In formal writing, shold is a polite form of must:

All students should report to the examination room by 8:30

Should have/ shouldn’t have and ought to have/ ought not to have are used when we think someone has made a mistake or done something wrong in the past

You ought to have out your valuables in the safe ( you didn’t do it)

You shouldn’t have left your hotel room unlocked ( you did do it)

Had better ( not) ( non – modal) is used to make a recommendation , when we say what we think is the right thing to do. Note that this is often contracted to you ‘d better :

I think you ‘d better do to the doctor. You look terrible

( Sưu tầm MACMILLAN)