2012英语中考二轮复习精品课件语法专题1-8(121张ppt).ppt

·人教版 3．表示转折关系的：but(但；但是；可是)，while(然而) She was very tired，______ she kept working till midnight. 她虽然累了，但是一直工作到深夜。 Hes a worker ______ his wife is a doctor. 他是工人而他妻子是医生。 4．表示因果关系的：so(所以) He got up late，______ he didnt catch the early bus. 他起床晚了，所以没赶上早班车。 but while so ·人教版 考点二：从属连词 1．引导状语从句的连词 (1)引导时间状语从句的连词：when，while，as，before，after，until，as soon as，since等。时间状语从句和主句的时态关系为：“主将从现”，“主过从过”。 ①when“当……时”。如： I was doing my homework ______ the telephone rang. 我在做作业的时候电话铃响了。 when ·人教版 ②while“正当……时，正在……时”。在while引导的从句中，谓语动词必须是延续性动词，且常常用进行时。as“正当……时”，既可用连续性动词，也可用短暂性动词。如： He fell asleep _________ he was watching TV. 他看着电视睡着了。 As Millie sat down on the sofa，Amy came into the room.米莉坐在沙发上时，艾米走进了房间。 ③before“在……之前”； after “在……之后”。如： Ill wait for you here before you come back. 在你回来前，我会在这儿等你。 while/as ·人教版 ④until“直到……为止”。如： The child ______ go to bed ______ his mother came back. 直到他妈妈回来了，这孩子才去睡觉。 ⑤as soon as “一……就……”。如： Ill call you _________ I get there. 我一到那儿就给你打电话。 ⑥since “自从”。如： I have lived in Beijing ______ I came to China. 自从来到中国以来我就住在北京。 didnt　 until as soon as since ·人教版 (2)引导条件状语从句的连词：if，unless等。如： ______ it is fine tomorrow，well go to the park. 如果明天天气好，我们就去公园。 Well be late ______ we hurry up. 除非快点，否则我们会迟到。 (3)引导目的状语从句的连词：so that(是为了，以便于)，in order that(以便于)等。如： He got up early __________ he could catch the early bus. 为了能赶上早班车，他起得很早。 I spoke loudly in order that everyone in the room could hear me. 我大声说话是为了让屋里所有人都能听得见。 If unless so that ·人教版 (4)引导原因状语从句的连词：because，as，since等。如： She didnt go to work _________ she was ill. 她没去上班，因为她病了。 [注意] because与so不能并用 (5)引导结果状语从句：so…that，such…that等。so…that和 such…that意思均为“如此……以至于……”。 so后接形容词或副词，such后接名词或名词性短语，that后接从句。如： I was ____________ I couldnt go any further. 我累得走不动了。 Tom is _______________________everyone likes him. 汤姆如此聪明，大家都喜欢他。 because so tired that such a clever boy that ·人教版 (6)引导让步状语从句的连词：though，although，even if(＝even though)等。如： The dress looks nice on you ________ its out of style. 虽然这件连衣裙过时了，它穿在你身上还是很漂亮。 [注意] though，although不