be concerned about / for / that-clause为什么concern要加ed,that-clause是什么意思?
concerning和be concerned with的区别,分别造句
be concerned about / for / that-clause为什么concern要加ed,that-clause是什么意思?
concerning和be concerned with的区别,分别造句
be动词后应该用动词的分词形式,称之为被动语态
that-clause是that 从句的意思
concerning是介词 意思是关于,
What do you know concerning this?
关于这事你知道些什么? be concerned with是参与、干预的意思 I won't be concerned with your business. 我不会参与你的事务
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