1. a matter of form

惯例

2. a matter of law

法律问题

3. a matter of life and death

生死攸关的事

4. a matter of opinion

看法因人而异的问题

5. a matter of record

有案可查的事

6. as a matter of fact

事实上，其实

7. as matters stand/as the matter stands

照目前的情况

8. for that matter/for the matter of that

就此而言；至于那个

9. in the matter of

在...上，就...而论

10. make matters worse

使情况更糟糕

11. no matter how (what, when, where, who, whether)...

不管怎样（什么，何时，哪里，谁，是否）...

e.g. No matter what the excuse, you must not be late.

不管有什么借口，你绝不能迟到。

12. not mince matters=not mince one's words/not mince (one's) words

直言不讳地说

13. what matters?

这有什么关系？（这无需担心）

14. what matter if

即使...又何妨

e.g. What matter if we meet with some difficulties?
即使我们会遇到一些困难，那又有什么可怕呢？