句子结构

　　Chapter Two —— Sentence Structure

　　1.主语：主语是一个句子的主体，一般位于句首，表示句子说的是什么人或者什么事情。一般由名词，代词，不定式，动名词或从句充当。

　　The girl is pretty.

　　He is a volunteer.

　　To see is to believe

　　Reading is useful.

　　What is more unbelievable is the fact that he didn’t die.

　　2.谓语：说明主语做什么，是什么或者怎么样，由简单动词或者动词短语构成.谓语在人称和数的方面必须要和主语一致。

　　They are teachers.

　　She looks well.

　　He can speak English.

　　He studies hard.

　　He laughed at his classmates.

　　3.宾语: 是动作，行为的对象，由名词，代词，短语，不定式，动名词，从句充当.它和及物动词一起说明主语做了什么，在谓语之后。

　　She plays the piano.

　　He often helps me.

　　I like watching TV.

　　She likes to go to shop this afternoon.

　　I think that he is a good guy.

　　注：直接宾语和间接宾语：英语中，一些及物动词如：give, pass, show, send, bring, tell, teach, buy, lend等，可以带两个宾语。一个指人，叫间接宾语;一个指物，叫直接宾语。

　　Eg. He gives him the book

　　(间宾) (直宾)

　　4. 表语：说明主语是什么，或者怎么样，由名词，形容词，副词，介词短语，不定式，动名词，短语，或者从句充当.表语位于系动词后面.

　　I am a teacher.

　　She is happy.

　　Everybody is here.

　　They are at home now.

　　My job is to teach English.

　　Seeing is believing.

　　This is what I want

　　5. 定语：是用来说明人或事物的品质或特征。修饰名词或代词。形容词，代词，数词，名词，介词短语，不定式，动名词，分词，从句都可以充当定语.

　　The black bike is mine. What’s your name?

　　I have five books. The boy in the room is Jack.

　　They made paper flowers. I have something to do.

　　A sleeping boy. A broken vase.

　　The girl who is talking is my sister.

　　注：英语的定语可以前置，也可以后置。独立的单词作定语时，习惯上放在被修饰的词之前作前置定语;短语或句子(定语从句)作定语时，应放在被修饰的词后面，作后置定语

　　6. 状语：状语用来修饰动词，形容词或副词.它表示行为发生的时间，地点，目的，方式，程度等.一般由副词，介词短语，不定式或相当于副词的词或短语充当，也可由从句来充当.

　　I have a dream today.(时间状语)

　　He did it carefully. (方式状语)

　　I was born on June 9th 1982 in Guangxi.(地点状语)

　　7. 宾语补足语：是补充说明宾语的身份，状态，特性或所做的动作的一种句子成分。一般由名词，形容词，不定式，介词短语和分词构成。

　　His parents named him Jim.

　　We found the book very interesting.

　　.Lucy asked him to turn down the radio.

　　I’ll have my hair cut tomorrow.

　　句子的结构

　　按句子的结构可分三种：

　　1)简单句：只有一个主语(或并列主语)和一个谓语(或并列谓语)。

　　e.g. He often reads English in the morning.

　　Tom and Mike are American boys.

　　She likes drawing and often draws pictures for the wall newspapers.

　　2) 并列句：由并列连词(and, but, for, or, so)或分号(;)把两个或两个以上的简单句连在一起构成。

　　e.g. You help him and he helps you.

　　The future is bright; the road is tortuous. 前途是光明的，道路是曲折的。

　　3)复合句：含有一个或一个以上从句的句子。复合句包含：名词性从句(主语从句、宾语从句、表语从句和同位语从句)、定语从句和状语从句等。

　　e.g. The foreign visitors took a lot of pictures when they were at the Great Wall.

　　(其中简单句其中二)

　　其中在简单句中英语句子的基本结构可以归纳成五种基本句型及其扩大、组合、省略或倒装。掌握这五种基本句型，是掌握各种英语句子结构的基础。

　　1. S+V→主语+谓语(不及物动词)(+状语)

　　Class begins.

　　Jim runs in the park.

　　及物动词后可直接加宾语：buy, catch, invent, found, like,

　　注：及物和不及物动词的区别 raise, find, forget

　　不及物动词后面不可直接接宾语，一般要加介词后再接宾语：

　　go, work, listen, look, come

　　eg.Managers often behave very differently outside the office and in it, even to the same person.

　　由于世界的工业化和人口的增长，水污染问题加剧了。/ is ge

　　2. S+V+O→主语+谓语(及物动词)+宾语

　　He enjoys reading.

　　eg.Children’s extensive exposure to television violence causes greater aggressiveness.

　　Solving these problems cannot depend on the simple rise in the price of petrol.