新概念英语第二册英语语法—状语从句中的省略课件

状语从句中的省略现象 状语从句的省略有以下几种情况: 1、当状语从句的主语与主句的主语一致,且从句中含有be动词,则通常可省去从句中的主语和be动词,出现如下结构: (1)连词(as等)+名词 As (he was) a teacher, he worked very hard. 他当老师的时候工作很努力。 (2)连词(though, if, when等)+形容词 Work hard when (you are) young, or you’ll regret. 少壮不努力,老大徒伤悲。 (3)连词(once, as if, while等)+介词短语 He looked everywhere as if (he was) in search of something. 他四处张望,好像在找什么东西。 (4)连词(when, while, though等)+现在分词 While (I was) walking along the street, I heard my name called. 走在街上的时候,我听见有人叫我的名字。 (5)连词(when, if, even if, unless, once, until, than, as等)+过去分词 The exhibition is more interesting than (it was) expected. 那个展览比预料的更有趣。 (6)连词(as if, as though等)+不定式 He opened his lips as if (he were) to speak. 他张了张嘴,好像要说话。 2、当从句中的主语是it,谓语动词中又含有be动词时,可以把it和be动词一起省略。此时构成“连词(if, unless, when, whenever等)+形容词”。 Unless (it is) necessary, you’d better not refer to the dictionary. 如果没有必要,你最好不要查字典。 另外,我们还可以用so或not代替上文内容,此时可用“if+ so/ not”省略句式。 1. Get up early tomorrow. If not (= If you don’t get up early), you will miss the first bus. 明天得早起。如果不早起,你就赶不上首班车。 2. He may not be at home then. If so (= If he is not at home), leave him a note. 那时他可能不在家。如果他不在家的话,给他留个便条。 1. The research is so designed that once _, nothing can be done to change it. A. begins B. having begun C. beginning D. begun 2. Though _ money, his parents managed to send him to university. A. lacked B. lacking of C. lacking D. lacked in 巩固练习 1.When he heard the good news, he jumped with joy. 2.When she was asked to sing a song for the class, she felt nervous. 3.After he visited the city twice, he decided to settle there. 4.Though I have lived here for two years, I still feel a stranger. 5.We must keep studying so that we can keep pace with times. Hearing After visiting Having lived to keep 1.听到这个消息,我们高兴得跳了起来. 2.看到老师进来,他假装正在读书. 3.在河边散步的时候,我听到有人呼救. 4.发现车丢了,他立刻了报警. Hearing the news, we jumped with joy Seeing the teacher come in, he pretended to be reading. Walking along the river, I heard someone calling for help. Finding the bike missing / lost /gone, he d