英语句子成分主语谓语宾语表语定语状语补语
同位语讲解
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英语主谓宾表定状补成分精简讲解
一．主语：
主语(subject) 是一个句子的主题( theme)， 是句子所述说的主体。它的位置一般在一句之首。可用作主语的有单词、短语、从句乃至句子。 1．名词作主语。
A tree has fallen across the road. (倒下横在) Little streams feed big rivers. ( 小河流入大江。) 2．代词用作主语。
You’re not far wrong. (你差不多对了)。
He told a joke but it fell flat. (他说了个笑话，但没有引人发笑) 3．数词用作主语。
Three is enough. 三个就够了。
Four from seven leaves three. 7减4余3。 4．名词化的形容词用作主语。
The idle are forced to work. 懒汉被迫劳动。 Old and young marched side by side. 老少并肩而行。 5．副词用作主语。
Now is the time. 现在是时候了。 Carefully does it. 小心就行。 6．名词化的介词作主语。
The ups and downs of life must be taken as they come. 7．不定式用作主语。
To find your way can be a problem.你能否找到路可能是一个问题。
It would be nice to see him again. 8．动名词用作主语。
Smoking is bad for you. Watching a film is pleasure,but making one is hard work. 9．名词化的过去分词用作主语。
The disabled are to receive more money. The deceased died of old age. 10. 介词短语用作主语。
To Beijing is not very far. From Yenan to Nanniwan was a three-hour ride on horseback. 11. 从句用作主语。
Whenever you are ready will be fine. Because Sally wants to leave doesn’t mean that we have to. 12. 句子用作主语。
\ is a greeting. “你好”是一句问候语。 二．谓语
谓语(predicate) 或谓语动词(predicate verb) 的位置一般在主语之后。 谓语由简单动词或动词短语（助动词或情态动词＋主要动词）构成。 1．由简单的动词构成。
(1). What happened 发生了什么事
(2). He worked hard all day today. 他今天苦干了一天。 (3). The plane took off at ten o’clock. 飞机是十点起飞的。 2．由动词短语构成的谓语。 (1). I am reading. 我在看书。
(2). What’s been keeping you all this time 这半天你在干什么来着 (3). You can do it if you try hard. 你努力就可以做到。 3．英语常用某些动作名词代替表动态的谓语动词，表生动。
这种动作名词之前常用没有多大意义的动词have, get, take, give 等。如：
英语句子成分主语谓语宾语表语定语状语补语同位语讲解
