Question

1. He saw most of the boys.
2. He saw most of his boys.
3. He saw most of these boys.
4. He saw most of some boys.
5. He saw most of ____ boys.
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Q1: Are the sentences all grammatical?
What about #4? Can we use #4?
Q2: What other words can be put in the blank in #5?
Q3: What is the meaning of 'boys' in #2? Do 'boys' mean 'sons'?

Answer 1

All the sentences are fine. You'd use #4 if you were answering a question about a group of boys that had already been pointed out to you and they are close to you. In #5, you could use "those boys" if answering a question about a group of boys that was farther away from you, but still within sight.