Enough usually follows adjectives and adverbs.Some examples:
Is if good enough for you? (It’s wrong to say – enough good)
You’re not eating quickly enough. (It’s wrong to say – enough quickly)
Enough is also used before a noun as a determiner.Some examples:
Have you got enough money?
There isn’t enough food.
Enough is occasionally used after a noun, but this is rare in modern English except in a few expressions.Some examples:
I was wise enough not to believe her.
If only I had courage enough to tell her what I feel.
When enough modifies an adjective and noun together, it comes before the adjective.See comparison of examples:
We haven’t got enough small pins. (Meaning we need more pins – enough modifies small pins.)
We haven’t got small enough pins. (Meaning we need smaller pins – enough modifies small.)
We use “enough of” before determiners (such as - that, this, a, my, the) and pronouns.Some examples:
a)I don’t know enough Japanese to translate this. (It is wrong to say – enough of Japanese)
I don’t understand enough of the words in this book.
b)You did not purchase enough food. (It is wrong to say – enough of the food)
You did not purchase enough of them.
If the meaning is clear, enough can be used alone without a noun to refer to an amount.Some examples:
Half a kilo of sugar will be enough.
It is wrong to say “The meat is enough” – because meat is not an amount.