N (người) + whom + S +V 

N + whose + N

N (vật) + which + V / S +V 

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1. The professor to whom you spoke yesterday is not here today.

2. Jack, whose grades are the highest in the school, has received a scholarship.

3. Philip bought a camera which has 2 lenses.

4 Fred is the man whom we are going to nominate for the office of treasure.

`color{orange}{~MiaMB~}`