It that were subjunctive, I wouldn't know it

So apparently the title of this entry is in the subjunctive. Amy's learning about this construction, because it's common in French. In English, it seems a random categorization only invented by grammar geeks.

"The subjunctive mood (sometimes referred to as the conjunctive mood) is a grammatical mood of the verb that expresses wishes, commands (in subordinate clauses), emotion, possibility, judgment, necessity and statements that are contrary to fact."

Right. I can't contest the fact that learning the grammar of a highly regular language (like a Latin one) helps you up the learning curve. But isn't it a bit silly to look for this stuff in English? God, we barely conjugate our verbs anymore.