- Are you warm enough?
- You are not old enough to become a grandmother.
But note that when enough modifies an adjective and noun together, it comes before the adjective.
- We haven’t got big enough chairs. (= We need bigger chairs – enough modifies big.)
- We haven’t got enough big chairs. (= we need more big chairs – enough modifies big chairs.)
Enough + noun
Enough can be used before a noun phrase as a determiner.
- Are you getting enough sleep?
- There is enough room for everybody to sit down.
Before a pronoun or a noun with a determiner, we use enough of.
- The exam was bad. I couldn’t answer enough of the questions.
Enough of is also used after personal and geographical names.
- I haven’t seen enough of Europe.
Enough + infinitive
Enough can be followed by an infinitive.
- You are not old enough to marry.
- I haven’t got enough money to buy a car.
Infinitives can be introduced by for + noun/pronoun.
- It is late enough for the children to go to bed.
Enough … to vs. Too … to
- He is strong enough to lift that box.
- The boy is clever enough to understand this.
- We are not rich enough to buy a car.
- He was foolish enough to listen to her.
Too—to shows undesirable excess. It has a kind of negative meaning.
- She was too tired to walk.
- This is too good to be true.
- The coffee is too hot for me to drink.
Note that She was too tired to walk means She was so tired that she could not walk.