Except after an introductory dependent clause, donot use a comma to separate a --Adapted from Philip Ball, Designing the Molecular World Do not set off a clause that is essential to the sentence. Such clauses oftenbegin with that. Do not use a comma to separate the subject from therest of the sentence. --Adapted from Philip Ball, Designing the Molecular World Copyright ©2001 The McGraw-Hill Companies. Any use is subject to the Terms of Use and Privacy Policy. McGraw-Hill Higher Education is one of the many fine businesses of Unacceptable
Ever since the atomistic view of matter came to be accepted, it has beena burning question, how to see into the microworld ofmolecular chemistry.Acceptable
Ever since the atomistic view of matter came to be accepted, it has beena burning question how to see into the microworld of molecular chemistry.Unacceptable
Systematic surveys of the ocean floor revealed, thatthere were submarine mountain ranges, that extended forthousands of kilometers.Acceptable
Systematic surveys of the ocean floor revealed thatthere were submarine mountain ranges that extended forthousands of kilometers.Unacceptable
A biosensor that produces a changing electrical signal inresponse to levels of glucose in the bloodstream of diabetics, could beused to control the release of insulin so as to maintain the concentration ofblood sugar at a steady, safe level.Acceptable
A biosensor that produces a changing electrical signal inresponse to levels of glucose in the bloodstream of diabetics could beused to control the release of insulin so as to maintain the concentration ofblood sugar at a steady, safe level.
## Superfluous Commas ##
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