В пособии рассматриваются основные моменты английской грамматики: части речи имя существительное, имя прилагательное и наречие; видо-временные формы глагола; модальные глаголы; неличные формы глагола

C. ought to/should with different types of infinitives
ought to/should with the continuous infinitive refers the action to the present
and expresses the idea that the subject is not fulfilling his obligations or he is
acting foolishly, not sensibly:
We should be wearing the seat belts. (But we are not wearing them.)
I shouldn’t be telling you this. It’s supposed to be a secret.
ought to/should may be combined with the perfect infinitive. In this case the
meaning of the combination depends on whether the sentence is affirmative
or negative. In an affirmative sentence should/ought to + perfect infinitive
indicates that a desirable action was not carried out :
He looks very ill. He should have stayed at home.
They ought to have taken a taxi.
In a negative sentence should/ought to + perfect infinitive is used to say
that an undesirable action was carried out.
You shouldn’t have given him the money.
She ought not to have sold the ring.

19. Had Better + Bare Infinitive

This structure expresses a strong recommendation in a particular situation.
You also use had better (‘d better) when giving advice or when giving
your opinion about something. The negative is had better not. The correct
form is always ‘had better’ (not ‘have better’). You do not use ‘had better’ to
talk about obligation in the past, even though it looks like a past form. Had better often suggests a kind of threat or warning, and is stronger than should or ought to.
The neighbours are complaining. We’d better turn the music down.
My wife is waiting for me. I had better not be late.

20. Be + Infinitive

The be + infinitive construction is extremely important and can be used in
the following ways:


A. This structure is often used to talk about arrangements and plans made for the
future:
The Queen is to visit Japan next year.
She is to be married next month.
This construction is very much used in newspapers. In headlines the verb be
is often omitted to save space:
The Queen to visit Japan next year.