ACT Preparation / Unit 2 ACT 0103 short lesson, about 20 seconds
Nonessential Information
Captions available
The idea
Nonessential information adds detail but is not needed for the sentence's basic meaning. Commas set it off: a pair in mid-sentence, or one comma at the end.
In practice
"My mother, who lives in Denver, visits every June." Without the clause, the same person visits.
Where people slip
A mid-sentence interruption takes two commas; dropping the closing one breaks the pair.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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