将一下句子用定语从句合并1.there are six people in my family.four of them are doctors.(本句用定从...将一下句子用定语从句合并1.there are six people in my family.four of them are doctors.(本句用定从中的介词+关系代词 ) 2.do you know the lady?the nurse is looking after the lady.

There are six people in my family which four are docters.
Do you know the lady who is looked after by the nurse?

There are six people in my family, four of whom are doctors.
Do you know the lady whom the nurse is looking after.

1.There are six people in my family,four of whom are doctors.
2.Do you know the lady whom the nurse is looking after?

There are six people in my family, four of whom are doctors.
Do you know the lady who/whom the nurse is looking after.