all / most / some / none of

Grammar notes

All of, Most of, Some of, None of

Use these expressions when you talk about part or all of a group. They are common before object pronouns and noun groups with a determiner. The word of helps connect the quantity to the group.

• Example: Most of the class was ready.
• Example: None of them knew the answer.

Quick Rule

• quantifier + of + pronoun or noun group
• common patterns are all of us, some of the students, none of them

These phrases help you measure the group without counting every person or thing.