文档介绍：组成句子的各个组成部分叫句子成分：
1. 主语:是一个句子的主干部分之一,主语表明是“什么人” ， “ 什么事”.通常由名词,代词,不定式,动名词来充当.
likes her new bike.
work hard.
learn a foreign language is not easy.
football after school is great fun.
主
谓
宾
定
状
补
表
:说明主语做什么或怎么样。,连系动词,情态动词和助动词.
work very hard.
feels much better now.
(系动词:表示状态,后面往往接形容词 is am are sound look become)
△情态动词和助动词不能单独充当谓语,必须和实义动词或系动词一起构成谓语.
They can speak English well.
They are playing over there.
：动作行为的对象，说明主语做什么。,代词,数词,动词不定式,动名词构成.
study English. saw him yesterday.
wanted to have a pen. likes playing basketball.
teacher said that he would go there.
△双宾语：指人的是间接宾语，指物的是直接宾语。
He gave me two books.
4. 表语：跟在连系动词后面的词语或从句,用来说明主语的身份,特征,状态.
My sister is a nurse.
The trees turn green.
The flower is beautiful .
To see is to believe .
除了be 系动词外，还有一些动词也可以用作系动词，
1)表感官的动词:
2) 表变化的动词:
3)表延续的动词
feel, smell, taste, sound, look, appear, seem 等。
become, get, grow, turn, go,等
remain, keep, hold, stay, rest等。
:,
形容词性物主代词,名词,不定式,介词短语等.
This is a red car.
The building is their teaching building.
The woman doctor is my wife.
I have something to tell you.
The man in front of the gate is Mr. Li.
Every student has an English book.
:说明动作或状态特征,用来修饰动词,
形容词,,介词短语,动
词不定式,以及 after, when, as soon as , until, if, before等引起的从句.
You are quite right.
They often draw in the park.
We came here in order to learn English.
If it rains tomorrow, we will stay at home.
7. 宾补：补充说明宾语。(宾语和宾补
之间有逻辑上的主谓关系）
宾语+ 宾补叫复合宾语，复合宾语有以
下几种类型：
1 名词（代词）+ 不定式
2 名词（代词）+ 分 词
3 名词（代词）+ 名 词
4 名词 （代词）+ 形容词
1 名词（代词）+ 不定式
John asked me to help him.
Let him go home.
I saw her come out of the room.
名词（代词）+ 分词
（现在分词表示主动，过去分词表示被动）
I found him standing at the gate .
She could feel her heart beating violently.
He spoke slowl