So, I've used 关心 consistently with people - 关心别人, 关心我的妹妹, but can 关心 be used for object or a phrase??
Example for a phrase 我们关心的应该是房子应该有几间屋子?
Example for an object 吃饭时, 我关心的是调味。 长得怎么样, 我都不管。
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Sign up to join this community关心 can be used for object. 关心国事 (duplicated with one of the answer here) is an example.
However, 关心 is only one of the many translation of "care". For example you could use the other translation of "care" in below sentence in blanket:
"吃饭时, 我关心
(在意)的是调味。 样子
怎么样, 我都不管"
I cares only about the seasoning (or taste) when I eat, and do not concern about it's appearance.
Yes, you can.
Oxford
VERB
care for
关心国家大事
be concerned about the major issues of one's country
双方共同关心的问题
matter of mutual concern
You above sentences have some grammatical problems but using 关心 in this manner is no problem.
It's almost the same as care
in English in terms of its usage.
You can replace 关心 with care in English too:
Other examples:
When 关心
is used in polite way, it has more broader meaning:
taking care of
anything.