Hello!
1. She's too young to go into a bar.(enough)
She's not old enough to go into a bar.
2. It's funny. His other films were funny too. (as... as)
His other films were not as funny as this one.
3. I need more money to buy that DVD. (haven't / enough)
I haven't got enough money to buy that DVD.
4. Towns are noiser than villages. (not as / quiet)
Towns are not as quiet as the villages.
5. You aren' t tall enough to reach that shelf. (too / short)
You're too short to reach that shelf.