Comma with Introductory Word or Words
Jared Aragona
Commas with introductory word or words
Use commas after introductory a) clauses, b) phrases, or c) words that come before the main clause.
Introductory clause:
When Joe was finally ready to go to the library, he realized his wallet was gone.
Introductory phrases:
Near a small stream at the bottom of the canyon, we discovered the fossils.
Introductory word:
Nevertheless, Bob was overjoyed when he learned he had earned and A on the test.
Introductory phrase that modifies the subject:
Expressing her interest at the experiment, Vanessa said, “Wow!”
The MLCKRB (Master List Code Key and Rule Book): An English Grammar & Style Handbook by Jared Aragona, CC BY 4.0