* Cấu trúc enough:  S + V(tobe/normal) + Adj/Adv + enough + (for + O) + to_V

--------------------------------------------------------------

${1.}$ The water is quite cold enough for me to drink.

${2.}$ Howework is very easy enough for me to do.

${3.}$ Tom is tall enough to be the tallest in his class.

${4.}$ He is rich enough to buy the car.

=>

1. The water isn't warm enough for me to drink.

2. Homework is easy enough for me to do.

3. Tom is tall enough to be the tallest in his class.

4. He is rich enough to buy the car.

Adj enough (for sb) to V : đủ...để