The old man committed his will to the care of the lawyer.

The old man committed his will to the care of the lawyer.

the表示特指，of表示对象
不是take care of 那样的。

care作为to的宾语前面加the表示特指，特指lawyer的care，the care of不是固定短语。the care of the lawyer翻译成律师的保管，老人把自己的遗嘱交给保管，谁的保管？律师的保管。所以翻译成老人把遗嘱交给律师保管。

care of :转交， 处理， 看护
1. I'll take care of it.
我来办这件事。
2. Here is an asylum for the care of mentally ill or destitute people.
这儿是一家照顾精神病患者和赤贫人员的收容所。
3. I pick up a leaflet about the care of teeth.
我拿起一张宣传保护牙齿的传单。
4. The girl was committed to the care of an aunt.
这女孩被交给姨母照顾。
5. Take care of getting pneumonia.
小心得肺炎。
care about:关心
1. The children behave badly, but the guilt lies with the parents, who don't care about their behaviour.
孩子们行为不端，但是这应归罪于他们的父母，他们不关心子女的行为。
2. I don't care about the price, so long as the car is in good condition.
我不计较价钱，只要车很好用就行了。
3. I don't care about money.
我不看重钱。
4. Don't you care about this country's future?
难道你不为国家前途担忧吗?
5. She does not care about her husband at all.
她根本不关心她的丈夫。
care for: 喜欢， 介意
1. You should take care of your niece for the sake of your sister.
看在姐妹的份上，你应该照顾你的侄女。
2. How she manages to tear around from one social function to another and take care of her family at the same time is more than I can understand.
我真不明白，她怎么能够从一个社交场合到另一个社交场合，忙个不停，同时又能照料好家务。
3. I'd rather take care of the stomachs of the living than (take care of) the glory of the dead in the form of stone memorials.
我宁愿照顾活人的肚子，也不愿以石碑的形式来照顾死者的荣耀。
4. How beautifully everything is arranged by Nature; as soon as a child enters the would, it finds a mother ready to take care of it.
样样事情由大自然安排得多么漂亮啊——孩子刚一踏进了这世界就找到母亲给他照料的嘛。
5. He's old enough to take care of himself.
他大了，能照顾自己了。

老人将自己的遗嘱交由他的律师保管负责。