Here’s comma rule that I always have to look up, and when I say look up, I really mean look up, because there’s a cheat sheet on my office wall, and when I say office, I really mean garage.
- If you go to the park, you should wear your coat.
- You should wear your coat if you go to the park.
Note the missing comma in the second sentence. Both sentences have two clauses, but an “IF” clause only gets a comma if it is at the #1 position in a sentence.
Ah, those slippery grammar rules. And here is a miniature replica of the actual cheat sheet pinned to my garage wall:
If ________, __________.
T_________ if _________.