语法知识语法知识定语从句三限制性定语从句和非限制性定语从句：My sister, who is twenty, works in a bank.The man who came here yesterday has come again.限制性定语从句是先行词在意义上不可缺少的定语， 如果去掉，主句的意思就不完整或失去意义。这种从句和主句关系十分密切， 写时不用逗号分开。非限制性定语从句和主句关系不很密切，只是对先行词作些附加说明， 如果去掉，主句的意思仍然清楚。这种从句， 写时往往逗号分开。Mr King, whose legs were badly hurt, was quickly taken to hospital.The boss in whose department Mr King worked had heard about the accident.We shall make a decision about Ms King, whose story I have just told you.The boss of the company, whose name was Mr Little, told the story about Ms King.Mr King, whose legs were badly hurt, was quickly taken to hospital.Mr King was quickly taken to hospital.Her legs were badly hurt.HerWe shall make a decision about Ms King,whose story I have told you.We shall make a decision about Ms King.I have told you her story.herThe boss of the company, whose name was Mr Little, told the story about Ms King.The boss of the company told the story about… .His name was Mr Little.HisThe boss in whose department Mr King worked had heard about the accident.The boss had heard about the accident.Mr King worked in his department.hiswhose 在定语从句中作定语，表示引导词与 whose 后的名词为所属关系。 whose多指人，也可指物，指物时可与 of which互换使用。This is the book whose cover is blue.This is the book of which the cover is blue.Do you know the girl whose hair is very short in our class?Do you know the girl?Her hair is very short in our class.He is the student.I broke his pencil yesterday.He is the student whose pencil I broke yesterday. This teacher, with whose son I work, is liked by all the students.This teach...
