ACT Preparation / Unit 2 ACT 0104 short lesson, about 20 seconds
Essential Information
Captions available
The idea
Essential information tells the reader which one is meant. Without it, the sentence turns too general or changes meaning, so it takes no commas.
In practice
"Students who finish early may leave" means only those students, not all of them.
Where people slip
Commas would make the clause removable, and the sentence would let every student leave.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
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