限定和非限定性定语从句.pptVIP

What’s the difference between “which” and “as” when they refer to a whole sentence? Structure: “as” can be used in front of the sentence As was expected, we won the game. We won the game, as was expected. Meaning: “as” always means: 正如…一样 He missed the show,which was a great pity. He invited me to dinner, which made me happy. 非限制性定语从句中关系代词which/as可指整个主句的意思或一部分意思。As引导的定语从句既可以位于句末，也可以位于句首或句中。 As everyone knows, China is a country with a long history.正如大家所知，中国是一个有着悠久历史的国家。 She is a teacher, as is clear from her manner. 她是位教师，这一点从她的举止可以清楚地看出。 More examples 典型例题 Helen was much kinder to her youngest son than to the others, _____, of course, made the others envy(嫉妒) him. A. who B. that C. what D. which D 3。非限制性定从还能将整个主句作为先行词，对其进行修饰，这时从句谓语动词用第三人称单数。 eg.He seems not to have grasped what I meant,which greatly upsets me. eg.Liquid water changes to vapor,which is called evaporation. Carol said the work would be done by October, _____ personally(就我个人而论) I doubt(怀疑) very much A. it B. that C. when D. which D 关系代词：which / who / whom / whose /as 关系副词：when / where (非限制性定语从句中不用关系词that；非限制性定语从句中关系词不能省略) 非限制性定语从句中通常使用下列关系代词和副词 在of which/whom之前可以使用表达数量或定位的数词或代词。 1.I am doing different types of exercises, all of _______are quite helpful to my health. 2.Many people , some of ______are not overweight , are going on diets. 3.There are 54 students in my class, three of ________come from US. Other examples which whom whom 典型例题 The factory produces half a million pairs of shoes every year, 80% ________ are sold abroad. A. of which B. which of C. of them D. of that A It’s the same in China---many people, some of whom are not overweight at all, are always going on diet or taking weight-loss pills, which are often dangerous. The English play _______ my students acted at the New Year’s party was a great success. A. for which B. at which