7-5. Инфинитивные клозы

I hope that I'll be able to come.
Hope to be able to come.

We consider that he is very trustworthy.
We consider him to be very trustworthy.

We thought it wrong that he should be punished.
We thought it wrong to punish him.

He worked all night so that he could get the job done in time,
He worked all night so as to get the job done in time,

His work was so good that it made him internationally famous.
His work was so good as to make him internationally famous.

He was in such bad health that he was obliged to resign.
He was in such bad health as to be obliged to resign.

I don't know what I should do.
I don't know what to do.

I don t know wno(m) I should ask.
I don t know wno(m) to ask.

Can you tell me where I should go?
Can you tell me where to go?

I wonder when I should leave.
I wonder when to leave.

Tell me how I can start this car.
Tell me how to start this car

I haven't decided whether I shall sell it or not.
I haven't decided whether to sell it or not.

We must reach a decision (as to) whether we should sell.
We must reach a decision (as to) whether to sell.

An infinitive clause can replace relative clauses corresponding to the examples below:

The thing that you should do is what everyone else is doing.
The thing that to do is what everyone else is doing.

The person (whom) you should ask is George Lamb.
The person to ask is George Lamb.

The place where you should go is Brown's.
The place where to go is Brown's.

The time when you should leave is after they've served coffee.
The time to leave is after they've served coffee.

The way you should start it is to give it a push.
The way to start it is to give it a push.

The question of whether we should sell is still undecided.
The question of whether to sell is still undecided.

An infinitive clause can also replace relative clauses in the following types of example:

You need someone who can look after you.
You need someone to look after you.

I've brought a book that I can read.
I've brought a book to read.

George is the man for whom we should vote.
George is the man to vote for.

He was the first man who flew across the Atlantic.
He was the first man to fly across the Atlantic.

Инфинитив может быть в пассиве:

There are several people who have to consulted.
There are several people to be consulted.

There are still many obstacles that must be overcome.
There are still many obstacles to be overcome.

There is a lot of work that must be done first.
There is a lot of work to be done first.

Is he really a man who can be trusted?
Is he really a man to be trusted?