Mary Ansell, in English Grammar: Explanations and Exercises (available on-line) says: It should be noted that except in the case of commonly used adverbs such as now , then , today , tomorrow , sometimes , usually , maybe and perhaps , adverbs and adverb phrases at the beginning of a clause must usually be followed by commas. In the following examples, the commas are underlined. g.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
It should be noted that except in the case of commonly used adverbs such as now, then , today, tomorrow, sometimes, usually, maybe and perhaps, adverbs and adverb phrases at the beginning of a clause must usually