Introductory Adverbs & Phrases, Part I

Writing.lifetips.com/cat/56416/commas/index.html">Commas are not needed after "ordinary introductory adverbs" or "short introductory phrases" that answer such questions as:

WHEN: tomorrow, yesterday, recently, early next week, in the morning, soon, in five years, in 2004

HOW OFTEN: occasionally, often, frequently, once in a while

WHERE: here, in this case, at the meeting

WHY: for that reason, because of this situation