英语语法——基本句子成分和结构

第一讲英语基本句子成分和句子结构

一、英语句子成分

句子成分的定义：构成句子的各个部分叫句子成分。句子成分有主要成分和次要成分，主要成分有主语和谓语，次要成分有表语、宾语、定语、状语、补足语、同位语和插入语。

1. 主语：主语是一个句子所叙述的主体，一般位于句首。但在there be结构、疑问句（当主语不是疑问词时）和倒装句中，主语位于谓语动词、助动词或情态动词后面。主语可由名词、代词、数词、不定式、动名词、名词化的形容词和主语从句等表示。例如：Tom is a good boy. （名词）

We often speak English in class. （代词）

One-third of the students in this class are girls. （数词）

To swim in the river is a great pleasure. （不定式）

Smoking does harm to the health. （动名词）

The rich should help the poor. （名词化形容词）

When we are going to have an English test has not been decided. （主语从句）

It is necessary to master a foreign language. （it为形式主语，不定式为真实主语）

2. 谓语：谓语说明主语所做的动作或具有的特征和状态。动词在句中作谓语，一般放在主语之后。谓语的构成如下：

(1) 简单谓语：由一个动词或动词短语构成。例如：

He practices running every morning.

(2) 复合谓语：

由（情态动词或其他助动词+动词原形）构成。例如：

You may keep the book for two weeks.

He has caught a bad cold.

We are having a quick breakfast.

3. 表语：表语用以说明主语的身份、特征和状态，它一般位于系动词（如be, keep, remain, become, get, grow, turn, look, seem, feel, smell, sound, taste等）之后。表语须和系动词一起构成句子的复合谓语（系表结构）。表语一般由名词、代词、形容词、分词、数词、不定式、动名词、介词短语、副词及从句充当。例如：

My mother is a doctor. （名词）

Is it yours? （代词）

The weather has turned cold. （形容词）

The speech is exciting. （现在分词）

The door is closed. （过去分词）

Three times seven is twenty one. （数词）

His job is to teach English. （不定式）

His hobby is playing football. （动名词）

The machine must be out of order. （介词短语）

Time is up. The class is over. （副词）

The truth is that he has never been abroad. （表语从句）

4. 宾语：宾语表示动作的对象或承受者，一般位于及物动词和介词后面。例如：

They went to see an exhibition yesterday. （名词）

The heavy rain prevented me from coming to school on time. （代词）

How many dictionaries do you have? I have three. （数词）

They helped the old with their housework yesterday. （名词化形容词）

He pretended not to see me. （不定式）

I enjoy listening to popular music. （动名词）

I think (that) he is fit for this job. （宾语从句）

宾语种类：

(1) 双宾语（间接宾语+直接宾语），例如：

Lend me your dictionary, please. =Lend your dictionary to me, please.

间宾直宾直宾间宾

※可以带双宾语的动词有bring, give, show, send, pass, tell, lend, offer, buy, make, do等。

(2) 复合宾语（宾语+宾语补足语），例如：

They elected him their monitor.

宾语宾语补足语

5. 宾语补足语：用以补充说明宾语，并与宾语一起构成复合宾语的句子成分，叫做宾语补足语。英语中有些及物动词，除有一个直接宾语以外，还要有一个宾语补足语，才能使句子的意义完整。带有宾语补足语的一般句型为：某些及物动词（如make, let, see, find, name等）或介词（如with）+宾语+宾补。宾语补足语可由名词、形容词、副词、不定式、分词、介词短语和从句充当。例如：

His father named him Dongming. （名词）

They painted their boat white. （形容词）

Let the fresh air in. （副词）

I ask him to go home now. （不定式）

We saw her entering the room. （现在分词）

He found the door locked. （过去分词）

We found everything in the lab in good order. （介词短语）

We will soon make our city what your city is now. （从句）

6. 定语：修饰名词或代词的词、短语或从句称为定语。定语可由以下成分充当：

Guilin is a beautiful city. （形容词）

China is a developing country. （现在分词）

America is a developed country. （过去分词）

There are thirty women teachers in our school. （名词）

His maths is very good. （形容词性物主代词）

I am the last person to leave the classroom. （不定式）

The teaching plan for next term has been worked out. （动名词）

He is reading an article about how to learn German. （介词短语）

7. 状语：修饰动词、形容词、副词或整个句子，说明动作或状态特征的句子成分，叫做状语。可由以下形式充当：

Light travels most quickly. （副词性词组）

He has lived in the city for ten years. （介词短语）

He is proud to have passed the national college entrance examination. （不定式）

He is in the room making a model plane. （现在分词短语）

Wait a minute. （名词）