例句：
He is old enough to take care of himself.
他大了，能照顧自己了。
Will you be kind enough to shut the door?
可否勞駕把門關上?
She is old enough to travel by herself.
她年紀夠大，可以獨自旅行了。
Is the river deep enough to swim in?
在這條河里游泳水夠深嗎?
He was not strong enough to do the work.
他不夠強壯，不能做這工作。