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

2. adjective/adverb + enough + infinitive

1. 
   adjective + enough + infinitive
   

She is old enough to travel by herself.
The ice was thick enough to walk on.

2. 
   enough may be used as pronoun or adjective
   

He doesn’t earn enough (money) to live on.
We haven’t enough time to do it properly.
She had enough sense to turn off the gas.
have + enough + abstract noun here is sometimes replaceable by
have + the + noun:
She had the sense to turn off the gas.
We haven’t (the) time to do it properly.
(the is optional before time here)

3. 
   adverb + enough + infinitive
   

He didn’t jump high enough to win the prize.
We started early enough to catch the train.
d) for + noun/pronoun can be placed before the infinitive in this
construction:
He spoke slowly enough for everyone to understand.
I didn’t know him well enough to judge.


3. so + adjective + as + infinitive
He was so foolish as to leave his car unlocked.
This is an alternative to the enough construction, but note that He was
foolish enough to leave his car unlocked can mean either that he did it or
that he was capable of doing it, but He was so foolish as to leave etc.
implies that he actually did so.
The so … as construction is not very often used as shown above, but it is
quite common as a polite request form:
Would you be so good as to forward my letters?
Would you be so kind as to answer the telephone if it rings?

13. The Infinitive as Attribute