The phrase "command of subject matter" is correct and usable in written English.
It can be used to describe someone's expertise or mastery in a particular field or topic.
Example: "Her command of subject matter was evident during the presentation, as she answered every question with confidence and clarity."
Alternatives: "mastery of the subject" or "expertise in the topic."
Other changes require greater mastery of subject matter.
These topics are familiar territory for Dr. Sherman, who recently authored The Power of Plagues, in which he also examines 7 of these infections; his command of the subject matter is evident.
They demonstrate a command of their subject matter and an understanding, respect and appreciation of other cultures which, in and of itself, distinguishes them at a time when so many citizens of western countries have withdrawn within themselves, gravitating to demigods offering simple answers that are built on false patriotism and misplaced anger.
"Many of the comments we have heard about the framework," they wrote last summer, "reflect either a misunderstanding of U.S. history or a very limited faith in history teachers' command of their subject matter". .
Indeed, Wright et al. (1998) contended that oral exams reflect the scientific maturity of the student and that written exams measure a student's command of the subject matter.
LM Latham's command of her subject matter is so complete that one might assume this was a spot of moonlighting by the American television script-writer who shares her name.
Few things I like better in life than getting lost in a good book written by an author who is in full command of his subject matter, either because he has lived the story or so thoroughly researched it.
Though the faculty member presumably has a much stronger command of the subject matter than students, teacher-dominated discussions may impede student leadership development and limit opportunities for interactive learning.
Not surprisingly, the best tutors had a superb command of their subject matter (content knowledge), allowing them to draw on appropriate information for whatever problems might arise in the tutorial situation.
