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初中英语语法基础知识大全

更新时间: 2021-04-17 21:30:59

英语句子成分分七种:主语、谓语、宾语、定语、状语、表语、宾语补足语。详情如下:

1、主语:句子的主体,全句述说的对象。回答是“谁”或者“什么”。一般由名词、代词、不定式、动名词或从句担当,位于句首。

如:The boy needs a pen.

Smoking is bad for you = To smoke is bad for you

2、谓语:说明主语的动作或状态。回答“做(什么)”。由动词或系动词加表语担任,常置于主语后。

如:The train leaves at 6 o’clock.

She is reading.

3、宾语:表示动作的对象。回答做的是“什么”。一般由名词或代词担当,常置于谓语后。

如:He won the game.

He likes playing computer.

注意:

(1)有些及物动词带有两个宾语,一个指物(直接宾语),一个指人(间接宾语)。

间接宾语一般放在直接宾语前面。

如:He wrote me a letter . (他给我写了一封信)

(2)有时可把介词to或for加在间接宾语前构成短语,放在直接宾语后面,来强调间接宾语。

如:He wrote a letter to me . (他给我写了一封信)

4、表语:用以表述主语的特征、状态、身份等。回答是“什么”或者“怎么样”。一般由名词或形容词担任,置于系动词或be动词之后。

如:He is a student. We are tired.

注意: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: feel, smell, taste, sound, look, appear, seem 等。

(2)表转变变化的动词: become, get, grow, turn, go等。

(3)表延续的动词: remain, keep, hold, stay, rest等。

5、定语:对名词或代词起修饰、限定作用的词、短语或句子。

如:The black bike is mine.(形容词)

The boy in blue is Jim.(介词短语)

I have nothing to do today.(动词不定式)

注意:

(1)当定语修饰不定代词如:nothing , anything , everything , something等时,定语要放在其后作后置定语。例如: I tell him something interesting.

(2)不定式、短语或从句作定语时,也放在被修饰的名词之后。

例如:The boys who are in the room are playing games.

6、状语:用以修饰动词、形容词、副词及全句,通常由形容词、代词、数词等担任位置灵活。

(1)修饰形容词或副词时,通常位于被修饰的词之前;

如:I am very sorry.

(2)表示时间、地点、目的的状语一般位于句子两头,强调时放在句首。

如:In order to cheer him up, I told him the truth.

They are writing English in the classroom.

(3)一些表示不确定时间(如:often)或程度(如:almost)的副词状语通常位于be动词、助动词、情态动词之后,动词之前。

如:We often help him.

He is always late for class.

7、补语:补充说明宾语怎么样或干什么,。由n./adj./介宾/分词/不定式等担任。常位于宾语后。

如:He made me sad.(形容词)

She asks me to take an umbrella.(不定式)

The war made him a soldier.(名词)

I find him at home.(介词短语)

I saw a cat running along the wall.(分词)

8、同位语:通常紧跟在名词、代词后面,进一步说明它的情况, 它可以由名词、代词、名词性短语或从句充当。

如:Tom, our monitor, is a handsome boy.

I myself will do the experiment.

She is the oldest among them six.

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