This is a matter of capital importance.
This is considered to be a matter of great importance.
That is a matter of degrees.
This is a matter of great importance.
Freedom of speech is now taken as a matter of course.
As a matter of fact, I do speak Spanish.
As a matter of fact, I haven't eaten anything since this morning.
It's only a matter of time.
It is a matter of principle with him to answer your questions honestly.
Tom is not a lazy boy. As a matter of fact, he works hard.