单词：serious about
认真的, 真诚的
serious about的用法和样例：
例句
- Do you think he is serious about leaving his wife?你认为他真的想离开他的妻子吗？
- Do you think he is serious about leaving the company?你认为他当真要离开公司吗？
- He was serious about the matter.他对于那件事很认真。