look after的同义词是take care of。
take care of
词义：动词：照顾；注意；抚养；处理；负责；保管；<非正式>为某物付款（尤在请客时）。
固定搭配：take care of business 负责。
例句：
1、See that you take care of him. 你一定要好好照顾他。
2、We need to take care of our bodies. 我们需要照顾好自己的身体。
3、He's old enough to take care of himself. 他已经不小了，能照顾自己了。
