定语从句whichas及其它.doc

定语从句之特殊的关系代词“which”与“as”一、which可引导_, 代替的内容为_ _（= and this）1. She won a gold medal, _ the whole family considered a great honor.2. She was patient with the children, _ her husband seldom was.二、as引导定语从句（一）引导普通的定语从句（修饰一个名词或代词， 但先行词一般由_等修饰）（二）引导修饰整个主句的定语从句，先行词是_。3. People _ dont care for others are selfish.4. Such people _ dont care for others are selfish.5. I never give them a difficult problem _/_ they cant work out.6. I never give them such a difficult problem _ they cant work out. so difficult a problem as difficult a problem注意：She is such a good teacher _ all the students love and respect. _ all the students love and respect her.7. She is wearing the same hat _ I am wearing. （同样或同类事物） _ I wore yesterday. （同一事物）8. I have the same idea _/_ you have.注意：_三、as与which引导修饰整个主句的定语从句的区别（一）which引导的非限制性定语从句放在_；as引导的从句位置比较灵活，可放在_。9. The earth moves around the sun, _ we know.10. _ we know, the earth moves around the sun.11. The earth, _ we know, moves around the sun.（二）as引导的定语从句常出现 动词如：_ 名词或形容词如：_ 被动语态12. He was late again, _ is often the case.（三）as有“_”之意，而which没有13. He failed in the exam again, _ was expected14. He failed in the exam again, _ was unexpected定语从句之其他注意点：一、对于“介词+关系代词”结构的使用，重点是要弄清其中的介词如何确定和判断。归纳起来，有以下几点方法：（一）_1. The documents _ they were searching have been discovered.2. This is a subject _ we might argue for a long while.注意：由动词与介词构成的短语动词，通常不宜将它们拆开，否则会改变词意，如：_ _3. This is the picture at which he is looking. ( )4. This is the picture for which he is looking. ( )（二）_5. Physics is the subject in our school _ every student is interested.6. He referred me to some reference books _ I am not very familiar.（三）_7. Ill never forget the day _ she said goodbye to me.（四）_8. I finished my work at 9 oclock, _ I sat reading the paper.9. Look, this is the tallest building, _ is the new post office.注意：介词后接的关系代词通常为which和whom，但有时也可能是其他关系代词（如whose）甚至关系副词。如：10. He is the man from _ house the pictures were stolen. 11. In 1980 he caught a serious illness from _ effects he still suffers. 12. The book was written in 1946, _ the education system has witnessed great changes.13. He is standing by the window, _ he could have a good view of the park.“介词短语+关系代词”引导的非限制性定语从句，常用倒装语序。14. The old man lives in a big house, in front of which lies a small river.二、要特别注意in which case, at which point, at which time, by which time, during which time等这类常用表达。如：15. The postman comes at 6.30 in the morning, _ I am usually fast asleep. 16. The speaker paused to examine his notes, _ a loud crash was heard. 17. He may be busy, _ Ill call later. 18. We arrived at noon, _ the demonstration was over. 19. Tom spent four years in college, _ he learned French. 三、“名词、代词、数词+of+关系代词（which、whom）”引导的定语从句20. The river _ are covered with trees flows to the sea. （河岸边）21. The book contains 50 poems, _ were written in the 1980s. （其中一些）22. I saw some foreigners, _ were from America. （其中十人）四、定语从句的插入语现象定语从句的关系词后会加入一些句子，如：_等作插入语。解题时，去掉插入语，会使问题简单化。23. The girl knows three foreign languages, which we all think make it easier for her to find a good job.24. He finished the work in three days, which I thought was impossible.五、分隔式定语从句这类定语从句的先行词往往被介词短语或谓语分隔开，做题时，要_, 然后确定关系词。25. There is an expression on her face that I cant understand.26. The professor entered the hall who had just presented several lectures.六、定语从句中的虚拟语气27. In my opinion, it is (about / high) time (that) we _ new computers. _ new computers.28. Besides this, VR can be used to practise skills in a secure environment that oth