He rushed to help the man his car was trapped in the mud.his---whose,whose 引導(dǎo)定語從句
All which ia need ia supply of oil.　　　　　　　which改為that,all 作先行詞,引導(dǎo)詞只能用that
This is the best film which I have seen this year.which改為that,先行詞有最高級best修飾
The cake you made it yesterday was very delicious.　去掉it,you made 為cake 的定語從句
Do you know the man worte the letter?wrote改為writing,writhg the letter 為the man的后置定語
Who is the great man who saved my boy?第二個who 改為that,　who引導(dǎo)的疑問句定語從句引導(dǎo)詞只能用that
Here are the patients after whom you will look.
This is all the money with that he can buy a Christmas present for his mother.that改為which,介詞后引導(dǎo)詞只能用whichHere are the patients after whom you will look.The girl which ia standing next to our teacher ia her daughter.這兩句那會給你加懸賞很感謝The girl which ia standing next to our teacher ia her daughter. which改為　who ,先行詞為人Here are the patients after whom you will look.　after 回到　look后面，look after 為動介型詞組，不能拆開