Which is…

“Which is/are” begins an adjective clause. If the clause is necessary to define the word it modifies and could not be removed without losing communication, then there is no comma before it. If the clause contains information which is nice to know but does not really define the word it modifies and is not really necessary to the meaning, there …

The Story of “Whereas” and “Although”

So often we see whereas and although incorrectly punctuated with a semicolon in front and a comma after as in …was seen with him; although, she did not… …was seen with him; whereas, she did not…. This punctuation implies that these words are conjunctions (conjunctive adverbs) that start a new sentence. Instead, whereas and although are conjunctions (subordinate conjunctions) that …