什么叫系动词

什么叫系动词
什么叫系动词

什么叫系动词
系动词亦称连系动词（Link Verb）,作为系动词,它本身有词义,但不能单独用作谓语,后边必须跟表语（亦称补语）,构成系表结构说明主语的状况、性质、特征等情况.
说明：
有些系动词又是实义动词,该动词表达实义时,有词义,可单独作谓语,例如：
He fell ill yesterday.
他昨天病了.（fell是系动词,后跟补足语,说明主语情况.）
He fell off the ladder.
他从梯子上摔下来.fell是实义动词,单独作谓语.
[编辑本段]分类
1）状态系动词
用来表示主语状态,只有be一词,例如：
He is a teacher. 他是一名教师.（is与补足语一起说明主语的身份.）
2）持续系动词
用来表示主语继续或保持一种状况或态度,主要有keep, rest, remain, stay, lie, stand, 例如：
He always kept silent at meeting. 他开会时总保持沉默.
This matter rests a mystery. 此事仍是一个谜.
3）表像系动词
用来表示"看起来像"这一概念,主要有seem, appear, look, 例如：
He looks tired. 他看起来很累.
He seems (to be) very sad. 他看起来很伤心.
4）感官系动词
感官系动词主要有feel, smell, sound, taste, 例如：
This kind of cloth feels very soft.
这种布手感很软.
This flower smells very sweet.
这朵花闻起来很香.
5）变化系动词
这些系动词表示主语变成什么样,变化系动词主要有become, grow, turn, fall, get, go, come, run.
例如：
He became mad after that. 自那之后,他疯了.
She grew rich within a short time. 她没多长时间就富了.
6）终止系动词
表示主语已终止动作,主要有prove, turn out, 表达"证实","变成"之意,例如：
The rumor proved false. 这谣言证实有假.
The search proved difficult. 搜查证实很难.
His plan turned out a success. 他的计划终于成功了.（turn out表终止性结果）
[编辑本段]注意事项
系动词本身有一定的词义,不能单独作谓语,后面必须与表语连用.复习系动词时,必须注意以下几个问题：
1. be是最重要的系动词,主语不同,be的形式也不同,且有时态的变化.
通常表示主语的特征、状态和身份等,后面接形容词、副词、名词、介词短语、不定式、v-ing、过去分词及表语从句作表语.
特别要注意“由be+过去分词”所构成的系表结构与“由be+过去分词”所构成的被动语态的区别.
前者侧重于表示主语的特征或所处的状态,通常没有由by引导的介词短语.
如：The door was closed.
后者侧重于强调主语是谓语动词所示动作的承受者,表示动作；句中可以用由by引导的介词短语.如：The door was closed by me.
还要注意“由be+ V-ing所构成的系表结构与“由be+ V-ing”所构成的进行时态的区别.
前者侧重于说明主语具有的特征或存在的状态,也可说明主语是什么.如：My job is teaching English.
后者侧重于强调主语正在做某事.如：Mr Wang is reading an evening paper now.
2. 要注意由行为动词转化成的系动词.
表示人体感官的系动词有sound,taste,look,feel,smell等,后面接形容词；
表示主语从一种状态转变到另一种状态的系动词有become,get,go,turn,run,grow,come,fall,prove等,后面接形容词、名词或 to be+形容词,become后面接单数名词时,名词前要用不定冠词,turn后面接单数名词时,名词前不用不定冠词；
表示主语继续或保持某种身份、特征或状态的系动词有continue,keep,remain,stay,stand lie,rest,stay等,后面接表示状态的形容词；
表示判断的系动词有seem和appear,后面接形容词、to be+名词或形容词、that-clause、不定式等.
3. 要注意系动词的固定搭配.常见的有come true, fall asleep, fall ill, go bad, come right, run wild, wear thin, turn nasty等.
4. 要特别注意某些动词既可以做系动词,又可以做实意动词的用法.
系动词部分主要注意：其后要求接形容词,而不是副词做表语.遇到这种情况,只能先根据其意思判断清楚到底是前者还是后者,然后再对后面的词性和词义做出正确判断和选择.以taste一词为例：
The newly-invented soft drinking tastes quite unique.（这种新研制的软饮料尝起来挺独特的.注意：在这句话里,taste做系动词,不能使用进行时,后面接形容词.）
The chef is tasting the fish carefully.（厨师长正在品尝这道鱼.注意：在这句话中,taste做实意动词,可以使用进行时,并且后面接副词做状语.）
[编辑本段]专项训练
1. —What is Mr Wang like?
—____.
A. He is a teacher B. He is old and kind C. He looks like a balloon D. He likes English
2. What Mr White said sounds____.
A. friendly B. wonderfully C. pleasantly D. nicely
3. The poor boy ____ blind at the age of three.
A. turned B. goes C. became D. went
4. When he was a child he____ .
A. grew patience B. was alive C. ran wild D. came true
5. His voice____ as if he has a cold.
A. sounds B. listens C. hears D. seems
6. This shirt___ as if it is made of cotton.
A. is B. looks C. feels D. seems
7. He looks ___ he hadn’t had a good meal for a month
A. that B. as if C. when D. so far
8. It ____that he was late for the train.
A. looks B. turns C. gets D. seems
9. These apples taste_____.
A. to he good B. to be well C. well D. good
10. —Do you like the shirt?
—Yes, it ____ very soft.
A. feels B. felt C. is feeling D. is felt
11. The moment Mr Zhang went to bed, he____ asleep
A. kept B. got C. fell D. fall
12. When I went home yesterday, it was ____ dark.
A. going B. getting C. running D. coming
13. Their plan ____ to be a perfect one.
A. proved B. was proved C. is proving D. proving
14. The flowers in the garden ____ sweet.
A. sound B. taste C. become D. smell
15. She____ like her mother in character.
A. looks B. seems C. is D. feels
16. It____ another fine day tomorrow.
A. seems B. promises C. appears D. looks
17. He ____ much younger than he really is.
A. appears B. grows C. becomes D. turns
18. You____ very pale. Do you feel sick?
A. looked B. are looking C. looking D. are looked
19. His wish to become a driver has ____true.
A. turned B. realized C. come D. grown
20. Her father ____a writer.
A. turned B. grew C. has turned D. has become
答案与分析
1. B What’s...like?是询问人或事物的性质特征情况的交际用语,答语中常含有说明性质特征情况的形容词.
2. A sound表示“听起来”,后面接形容词作表语,答案B、C、D均为副词.
3. D若人或事物的情况变化是永久性的或难以扭转的坏变化时,用系动词go表示.
4. C run wild是固定搭配,表示“放荡不羁”.
5. A sound表示“听起来”,后面接as if 引导的表语从句,表示对主语所表示的特征、状态或性质作出的反应及判断.
6. C feel作系动词用时,表示“(东西)摸上去令人有某种感觉”.
7. B as if引导表语从句时,从句谓语动作发生在主句谓语动作之前,从句谓语用过去完成式.
8. D “ It seems that…” 表示“看起来……”.是固定句型,强调根据一定的事实所得出的一种接近于实际情况的判断.
9. D taste表示“尝起来”时,是系动词,后面接形容词作表语.
10. A feel表示“(某物)摸上去(令人)有某种感觉”时,是系动词,用于一般现在时.
11. C fall asleep表示“入睡”,是固定搭配,根据题意,应用过去时.
12. B get表示“逐渐……起来”、“开始……起来”时,是系动词,多用于进行时.
13. A prove表示“证明是”时,是系动词.
14. D smell表示“有……的气味”、“散发气味”时,是系动词,后面接形容词.
15. C belike表示“看起来像”时,既可指外貌,又可指品质和特征,侧重于特征.
16. B promise表示“有……的可能”、“给人以……的指望”时,是系动词,后面接名词作表语.
17. A appear表示“看起来”时,是系动词.侧重于在外表给人某种印象,常为“假象”.
18. B look表示“显得”、“看起来”时,是系动词,后面接形容词作表语,用进行时态,常带有感情色彩.
19. C come true是固定搭配,表示“实现”,其中come是系动词,表示“成为”、“变得”.
20. D become表示“变成”,作系动词用,在后面作表语的名词前要加a或an.turn后跟可数名词单数要去掉a(n).

能够连接主语与形容词的动词，
如be get become 等等
You are beatiful.中 You为主语，are为系动词，beatiful为表语（形容词）。