英语语法(七)复合句(1)VIP免费

1 2句子可分成： 简单句 simple sentence ( 有五种基本结构…… ) 并列句 compound sentence （由两个或两个以上的简单句，由并列连词连接而 成。）The signal was given, and the steamer moved slowly from the dock.Hurry or you won’t catch the bus. I had a drink, then I went home. （ 连接副词） It rained, therefore the game was called off. （ 连接副词）  复合句 complex sentence 3  复合句 (Complex Sentences) 由一个主句和一个或一个以上的从句构成的句子叫复合句。在复合句中主句是全句的主体，从句是全句的一个成分，不能独立。复合句中的从句根据在句子中所担任的成分可以分为名词性从句、定语从句和状语从句。 4 名词性从句名词从句包括主语、宾语、表语和同位语从句。它们可以由下列连词引导：从属连词 that, whether, if ；连接代词 who(ever), whom, whose, what(ever), which(ever) ；连接副词 when, where, why, how, how much / many /long /often 等。 5 1 ．主语从句 (Subject Clause ) 主语从句在句中作主语。引导主语从句的关联词有从属连词、连接代词、连接副词等，它们在句中一般不能省略。 How they get rid of poverty is a big problem.That mathematics finds its use in every science is evident. Whoever is tired may rest. Why the earth moves round the sun is quite clear now. 6注意：主语从句常放在句尾，而用 it 作形式主语使句子更加平衡（这时口语中常省略 that ） , 如上面第一、二句可改成： It is a big problem how they get rid of poverty ． It is evident (that) mathematics finds its use in every science. 但下列情况下必须把主语从句放在句尾而用 it 作形式主语：（ 1 ）主句谓语是被动语态时。 It is reported that many houses were destroyed. It is said that he is a good doctor. （ 2 ）主句是疑问句或感叹句时。 Is it true that the film star will come? How wonderful it is that we'll visit the Great Wall tomorrow.  7（ 3 ）主句谓语动词是 appear, turn out, happen, occur, com...