ENOUGH

1. Enough comes after adjectives and adverbs:

+ It wasn't good enough. (Good is an adjective)

+ I didn't do well enough. (Well in an adverb)

2. Enough comes before nouns:

+ I didn't have enough money. (Money is a noun)

3. We use enough of before the and this \ that \ these \ those:

+ Are there enough of the copies I made for everybody?

+ I've had enough of this rubbish.

4. We also use enough of before object personal pronouns:

+ Were enough of them there last night?

5. Enough can be used before an infinitive:

+ They don't have enough to eat.

NB: Sometimes people put enough after a noun, but this is for effect as it sounds a bit archaic and formal.