内容正文:
►专题08 动词
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考点精
讲
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动词分为四大类,分别为实义动词、情态动词、助动词和系动词。
考点01 实义动词
1.动词的分类
(1)及物动词(vt):后面必须跟宾语,可以用于“主+谓+宾”“主+谓+双宾”“主+谓+宾+宾补”结构
buy, catch, invent, found, like, observe, offer, prevent, promise, raise, find, forget, receive, regard, see, say, seat, supply, select, suppose, show, make, take, tell
(2)不及物动词(vi):后面不跟宾语,只能用于“主+谓”结构,一般要加介词后再接宾语
agree, go, work, listen, look, come, die, belong, fall, exist, rise, arrive, sit, sail, hurry, fail, succeed
(3)既可以用作及物,又可以用作不及物的动词,其意义不变
begin, start, answer, sing, close, consider, insist, read, learn, prepare, pay, hurt, improve...
(4)既可以用作及物,又可以用作不及物的动词,其意义完全不同
beat vi.跳动;vt.敲、打
grow vi.生长;vt.种植
play vi.玩耍;vt.打(牌、球),演奏
smell vi.发出(气味);vt.嗅
ring vi.(电话、铃)响;vt.打电话
speak vi.讲话;vt.说(语言)
hang vi.悬挂;vt.绞死
operate vi.动手术;vt.操作
2.动词的基本形式
(1)第三人称单数
· 一般情况下动词词尾加-s:work—works, write—writes
· 以-s, -x, -sh, -ch结尾的动词,在词尾加-es:guess—guesses, mix—mixes, finish—finishes, teach—teaches
· 以辅音字母加-y结尾的动词,改-y为-i,加-es:study—studies
· 不规则变化:have—has, be—is, go—goes, do—does
(2)现在分词
· 一般情况下直接在动词词尾后加-ing:study—studying, work—working
· 以不发音的字母-e结尾的动词,先去掉e,再加-ing:write—writing, move—moving
· 以重读闭音节结尾的动词,若词尾只有一个辅音字母,要先双写该辅音字母,再加-ing:get—getting, begin—beginning
· 以-ie结尾的名词,一般将-ie改为-y,再加-ing:lie—lying, die—dying, tie—tying
(3)过去式和过去分词
· 一般情况下直接在动词词尾加-ed:ask—asked, work—worked
· 以不发音的-e结尾,只加-d:love—loved, dance—danced
· 以辅音字母加-y结尾的动词,把-y变为-i,再加-ed:try—tried, study—studied
· 以重读闭音节结尾的动词,若词尾只有一个辅音字母,先双写该辅音字母,再加-ed:stop—stopped, permit—permitted
考点02 情态动词
情态动词表示说话人对某一动作或状态的态度,认为其“可能、应当、必要 ”等,但其本身词义不完整,不能单独作谓语动词,必须和动词原形连用。情态动词没有人称和数的变化,个别情态动词有过去式,用来表达更加客气、委婉的语气,时态性不强。常用的情态动词有:can (could), must/have to, should/ought to, may (might), will (would), dare/need, used to, shall。
1.情态动词的基本用法
情态动词
用法
否定式
疑问式与回答
can
能力(体力、智力、技能);
允许或许可(口语中常用);
可能性(表猜测,用于否定句或疑问句中)
Can not/cannot/can’t do
Can... do...?
Yes,...can.
No,...can’t.
could
Couldn’t do
may
可以(问句中表示请求);
可能,或许(表推测);
祝愿(用于倒装句中)
May not do
May ...do...?
Yes,...may.
No,...mustn’t./can’t.
might
Might not do
Might ...do...?
Yes,...might.
No,...might not.
must
必须,应该(表示主观要求)
肯定,想必(肯定句中表推测)
Must not/mustn’t do
Must...do...?
Yes,...must.
No,...needn’t/don’t have to.
Have to
只好,不得不(客观的必须,有时态人称变化)
Don’t have to
Do...have to so...?
Yes,...do.
No,...don’t.
Ought to
应当(表示义务责任,口语中多用should)
Ought not to/oughtn’t to do
Ought ...to do...?
Yes,...ought.
No,...oughtn’t.
shall
将要,会;
用于第一、三人称征求对方意见;
用于第二、三人称表示许诺、命令、警告、威胁等
Shall not/shan’t do
Shall...do....?
Yes,...shall.
No,...shan’t.
should
应当,应该(表示义务责任);
本该(含有责备意味)
Should not/shouldn’t do
Should...do...?
Yes,...should.
No,...shouldn’t.
will
意愿,决心;
请求,建议,用在问句中would比较委婉
Will not/won’t do
Will...do...?
Yes,...will.
No,...won’t.
would
Would not/wouldn’t do
dare
敢(常用于否定句和疑问句中)
Dare not/daren't do
Dare...do...?
Yes,...dare.
No,...daren’t.
need
需要;
必须(常用于否定句和疑问句中)
Need not/needn’t do
Need...to do...?
Yes,...must.
No,...needn’t.
Used to
过去常常(现在已不再)
Used not to do
Didn’t use to do
Use...to do...?
Yes,...used.
No,...use(d)n’t.
Did...use to do...?
Yes,...did.
No,...didn’t.
2.情态动词的特殊用法
“情态动词 + have done”表达“本……(而实际……)”的含义:
· should have done... 本该做(而实际未做)
· shouldn’t have done... 本不该做(而实际做了)
· could have done... 本能够做(而实际没做)
· needn’t have done... 本不必做(而实际做了)
· would have done... 本来会去做(而实际没做)
考点03 助动词
助动词本身一般没有独立的实际意义,不能单独作谓语,通常与实义动词一起构成谓语。助动词与实义动词连用,表示时态、语态、语气等,或构成陈述句、疑问句和否定句等。如: be (is, am, are, was, were, being, been), have (has, had, having),do (does, did),shall (should), will (would) 等。
考点04 系动词
是用来辅助主语的动词。它本身有自己的但不完全的词义,不能单独用作谓语,其后必须跟表语,在英语中,系动词的功能主要是把表语(名词、形容词、某些副词、非谓语、介词短语、从句)和它的主语联系在一起,构成系表结构,用来说明主语的性质、特征、品性或状态。
1.系动词的分类
(1)状态系动词:be
【例】He is a famous scientist.
(2)感官系动词:feel, smell, sound, taste
【例】
This flower smells very sweet.
The soup tastes good.
(3)变化系动词:become, grow, turn, fall, get, go, come, run
【例】
He became mad after that.
She grew rich within a short time.
(4)持续系动词:keep, remain, rest,stay, lie, stand, continue
【例】
He always keeps silent at meeting.
This matter remains a mystery.
(5)表象系动词:seem, appear, look
【例】
He looks tired.
He seems (to be) very sad.
(6)终止系动词:prove, turn out
【例】
The rumor proved false.
His plan turned out a success.
2.中学常见的系动词:
(1)be:在现在时中,有 am,is,are 三种形式,过去时中,am 和 is 变成 was,are 变成 were。be 有现在分词形式 being,还有过去分词 been 。如:He was busy. 他当时很忙。The road is being under repair. 路正在修。I have been very busy these days. 这些天我一直很忙。
(2)look:看上去,如:You look ill. 你看上去病了。
(3)feel:感觉起来,摸起来,如:Silk feels smooth. 丝绸摸起来很光滑。
(4)sound:听起来,听上去,如:Sounds great. 听起来不错。此句省去了主语 It,所以 sound 后面+s。
(5)smell:闻起来,如:The socks smell rerrible. 这袜子难闻死了。
(6)taste:尝起来,吃起来,如:It tastes good. 很好吃。
(7)seem【重要】:看起来,看上去,这个词是中学英语学习的重点,因为 seem 后面跟的花样比较多:
Damin seemed annoyed. 大明似乎生气了。(后跟形容词)
Damin seemed to be annoyed. 大明似乎生气了。(后跟不定式)
It seemed that Damin was annoyed. 大明似乎生气了。(It seems that 句型)
(8)become:表示“开始变得”,往往强调一个新状态的开始,如:He became angry. 他变得生气了。(此前并不生气)
(9)turn:性质、状态、形态或颜色等方面发生转变;变成,如:Lisa turned red. 丽莎脸红了。
(10)grow:逐渐变得,慢慢变得(强调有个变化过程),如:He grew braver after this. 这之后,他变得更加勇敢。
(11)get:形成某种状态,达到一个指明的状态;变得,如:It's getting dark. 天色越来越暗。
(12)go:变成,往往表是变成不好的状态,如:She went mad. 她疯了。The food is going bad. 食物变质了。
(13)fall:进入另一种状态;变成;成为:He fell asleep. 他睡着了。
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