先行用way 做状语, in which/ that /略可以，
先行词是way, 表示方式，在定语从句中做方式状语，其后的关系词可以有三种处理方式，即：in which/ that 或省略。
I like the way he smiles.
I like the way that he smiles.
I like the way in which he smiles.
one of +复做先行，从中谓语复数明，
one前若有only/ very, 从中谓语定用单;
Ling Qing is one of the volunteers who are ready to go to the countryside.
Ling Qing is the only one of the volunteers who is ready to go to the countryside.
定从名从可转换，all that被 what换;
1) I don’t believe whatever he says.= I don’t believe anything (that) he says.
2) Whoever breaks the law will be punished.= Anyone who breaks the law will be punished.
3) The driver didn’t hear what the policeman said. = The driver didn’t hear the words that the policeman said.
4) The students can do all (that) they can to help the old teacher. = The students can do what they can to help the old teacher.