在乎外用英语怎么说

"在乎"用英语可以表达为"care about"，这个短语的来源可以追溯到古英语时期，其中"care"意为"关心，担心"，而"about"意为"关于，在于"。例如：
I care about you. 我在乎你。
She doesn't seem to care about her grades. 她似乎不在乎她的成绩。
He cares about his appearance. 他在乎自己的外貌。
同样的，"不在乎"可以用"not care about"来表达，例如：
I don't care about what he thinks. 我不在乎他的想法。
She doesn't care about the consequences. 她不在乎后果。
He doesn't care about anyone but himself. 他不在乎别人，只在乎自己。