你好,很高兴回答你的问题。
Be adj enough to do sth
意思是足够怎么样去做某事
Be too adj to do sth
意思是太怎么样以至于不能
下面是举例
1.
He isn't old enough to take care of hims-elf.
2.
He is too young to take care of himself.
1.2.句是同义句,意思都是:
他太小了,不能照顾好自己。
3.
He is old enough to take care of himself.
(这是第1句的
反义句)意思是:
他(年纪)已经足够大了,能照顾好自己。
希望我的回答对你有帮助
(纯手打,求采纳)