（推薦）狀語從句的省略

1、1,1. While walking the dog, you were careless and it got loose and was hit by a car. While you were walking the dog, you were careless and it got loose and was hit by a car. 2. While crossing the road, you should be careful. While you are crossing the road, you should be careful.,2,在時(shí)間、條件和讓步等狀語從句中,

2、如果從句主語和主句的主語一致, 且從句的謂語含有be動(dòng)詞的某種形式, 從句的主語和be動(dòng)詞可以省略, 并且要同時(shí)省略。,狀語從句的省略,3,狀語從句省略句的結(jié)構(gòu)： 連詞+分詞（-ing、-ed)/形容詞 特點(diǎn)： 1.從句主語與主句主語相同 2.從句中謂語動(dòng)詞含有be動(dòng)詞,4,一般說來省略現(xiàn)象多出現(xiàn)在下列五種狀語從句中： 1.由when ,while ,as ,before, after, till, until, once等引導(dǎo)的時(shí)間狀語從句； 2.由whether ,if ,unless 等引導(dǎo)的條件狀語從句； 3.由 though ,although ,even if ,whatever等

3、引導(dǎo)的讓步狀語從句； 4.由 as ,than 等引導(dǎo)的比較狀語從句； 5.由as,as if ,as though 等引導(dǎo)的方式狀語從句.,5,熟讀深思 閱讀下列句子, 指出劃線句中省略的單詞 1. The country singers were playing the guitar while singing. (while 后省略了_ ),they were,6,2. When asked to answer questions, you should stand up. (When 后省略了_ ) 3. He will help us do it, if necessary. (if 后省略了 _ ),you are,it is,當(dāng)從句的主語是 it,謂語動(dòng)詞中又含有系動(dòng)詞be 時(shí) ,可以把it和系動(dòng)詞be一起省略. if necessary/possible/if true/so/not,7,靈活運(yùn)用 When 1_(travel)in Shanghai, I happened to meet my friend. We chatted for a little while. Even though 2 _ (invite), I didnt have a drin