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动词三态变化表

动词三态变化表
动词三态变化表

物质三态变化知识点总结

1.汽化及汽化的两种方式 物质由液态变成气态的过程,称为汽化(vaporization).汽化有蒸发(evaporation)和沸腾(boiling)两种方式. 2.蒸发 在液体_ 进行的汽化现象称为蒸发. 蒸发时液体分子由于运动加快从液面运动到空气中变成自由分子。 说明蒸发可在任何温度下发生. 3.影响蒸发快慢的因素(控制变量法) 液体的表面积越大,蒸发越快;液体的温度越高,蒸发越快;液体表面附近的空气流动越快,蒸发越快.如下图中b比a蒸发快. 4.蒸发过程要吸热 液体蒸发时,液面上部分液体分子克服其他分子作用离开液面,液体的温度降低,液体吸收周围环境的热.这就是通常所说“蒸发制冷”的原因. 5.沸腾 在液体_________和_________同时发生的剧烈的汽化现象,称为沸腾.液体沸腾时,分子运动剧烈,大量分子克服分子作用运动到空气中变成自由分子 6.水沸腾前和沸腾时的特征 (1)水中气泡在沸腾前、沸腾时情况如图; (2)水的声音在沸腾前响,沸腾时不响.这是因为容器底层水先升至100℃变成水蒸气向上升,上层水温仍不足100℃,当蒸汽的小气泡升至低于100℃的水层时,就迅速变为水滴,这种先膨胀又再收缩的过程,就引起了水的振动,当大量的小气泡从杯底上升时,就发出嘶嘶的鸣声; (3)沸腾前,对水加热,水的温度升高;沸腾时,继续对水加热,水的温度不变.水沸腾需要吸热. 7.沸点 液体开始沸腾的温度叫该液体的沸点(boiling point). 说明 (1)不同液体沸点不同; (2)液体的沸点随液面气压增大升高,沸点还与液体纯度有关; (3)液体沸腾时必须满足两个条件:一是液体的温度达到沸点;二是液体要不断吸热保持其沸腾. 8.蒸发和沸腾的区别

高中英语常用动词短语经典总结

高中阶段最为活跃的同源动词短语 独自一人在黑暗中走,那个男孩吹口哨给自己打气。

二、同源介词、副词动词短语 不同的动词可以和同一介词或副词构成短语来表达不同的含义,高考非常重视对这样的短语进行考查,考查的重点是以热点介词和副词为来源的动词短语。 我很高兴你亲自来这里处理这个问题。 三、词形相似的动词短语 一些动词短语词形相像,让人眼花缭乱,难以区分。高考试题经常对此设题考查考生的鉴别能力。解题时应仔细辨认,不能急于求成。

多词动词短语多由三个单词构成,因词数多、构词巧而备受高考命题者的重视。常见的多词动词短语有: 1.词形相近的动词之间辨义。如lie, lay; hanged, hung; rise, arise, raise; sit, seat等。 (1)rise, arise 和raise rise 升起,是不及物动词,其过去式是rose, 过去分词是risen; arise (问题等)出现,是不及物动词,其过去式与过去分词是arose, arisen; raise举起,是及物动词,是规则动词。 (2)sit与seat

sit表示“坐”这一动作;seat表示“就座”时要用be seated 或seat oneself。 2.意义相近的动词之间辨义。如borrow, lend; speak, say, talk; hope, wish等。 3.动词与其他词形相近、意义相似的词的辨义。如:advise, advice; cost, worth; pass, past 等。 4.意义不同,但容易混淆的动词的意义。如:explain, say; discover, invent, uncover等。

动词ing和三单形式的变化规则

1.一般情况下直接加ing play玩—playing listen听---listening read stories(读故事书)-- reading stories climb mountains(爬山)-- climbing mountains 2.以不发音的e结尾的动词,去e,再加ing make制做—making dance跳舞---dancing come来---coming 3.辅音+元音+辅音结尾的单词,双写词尾字母再加ing *(元音字母a、e、i、o、u)swim游泳—swimming run跑步—running stop停止—stopping shop购物—shopping 当主语是第三人称单数时,谓语动词要用第三人称单数形式, 如:I play football. He plays football. I live in Shanghai. Sarah lives in Shanghai. 主语第三人称单数形式:he / she / it / my father… /Amy / Zhang Peng… 1.一般情况在词尾加s: like—likes dance---dances live居住—lives 2.以o、s、x 、sh、ch结尾的单词加es. do—does go-- goes teach教--- teaches watch看--watches wash clothes洗衣服--- washes clothes 3.以元音(aeiou)+y结尾的单词,加s: play-- plays say说-- says 4.以辅音+y结尾的单词,变y为i再加es :fly kites放风筝-- flies kites study学习-- studies 5.特殊记:have有—has I have a book. She has a book. 1.一般情况下直接加ing play玩—playing listen听---listening read stories(读故事书)-- reading stories climb mountains(爬山)-- climbing mountains 2.以不发音的e结尾的动词,去e,再加ing make制做—making dance跳舞---dancing come来---coming 3.辅音+元音+辅音结尾的单词,双写词尾字母再加ing *(元音字母a、e、i、o、u)swim游泳—swimming run跑步—running stop停止—stopping shop购物—shopping 当主语是第三人称单数时,谓语动词要用第三人称单数形式, 如:I play football. He plays football. I live in Shanghai. Sarah lives in Shanghai. 主语第三人称单数形式:he / she / it / my father… /Amy / Zhang Peng… 1.一般情况在词尾加s: like—likes dance---dances live居住—lives 2.以o、s、x 、sh、ch结尾的单词加es. do—does go-- goes teach教--- teaches watch看--watches wash clothes洗衣服--- washes clothes 3.以元音(aeiou)+y结尾的单词,加s: play-- plays say说-- says 4.以辅音+y结尾的单词,变y为i再加es :fly kites放风筝-- flies kites study学习-- studies 5.特殊记:have有—has I have a book. She has a book. 一般现在时态变陈述句变一般疑问句(主语是第三人称单数)规则Does +he /she/it /一个人的名字、身份+动词原形+…….?

英语动词第三人称单数变化规则

英语动词第三人称单数变化规则 一般现在时的肯定句中,主语为第三人称单数的动词变化主要体现在词尾的变化上,其规律为: doesn’t 或does not,动词的第三人称单数形式要还原成原形:格式为doesn’t/does not + 动词原形,如: " He goes to school at six in the morning. (变否定句) →He doesn't go to school at six in the morning. 2、变一般疑问句:把含有动词第三人称单数形式的变成一般疑问句时,要借用助动词does,如: She goes home at five every day. →Does she go home at five every day --- Yes, she does./No, she doesn’t. 3、对划线部分进行提问(变特殊疑问句):一般格式为Whxxx + 一般疑问句 She goes home at five every day. (对划线部分提问) →When/What time does she go home every day She goes home at five every day. (对划线部分提问) ]

→Who goes home at five every day She goes home at five every day. (对划线部分提问) →What does she do at five every day 哪些主语是第三人称单数 1、人称代词he, she, it; 如:He likes watching TV. 他喜欢看电视。 She has lunch at twelve. 她十二点吃午餐。 It looks like a cat. 它看起来像只猫。 2、单个人名、地名或称呼作主语;是第三人称单数。如: Han Mei looks like her mother. 韩梅看起来像她的母亲。 , Beijing is in China. 北京在中国。 Uncle Wang often makes cakes. 王叔叔经常做蛋糕。 3、单数可数名词或this / that / the + 单数可数名词作主语时,是第三人称单数; A horse is a useful animal. 马是有用的动物。 This book is yours. 这本书是你的。 That car is red. 那辆小汽车是红色的。 The cat is Lucy's. 只猫是露茜的。 4、不定代词someone, somebody, nobody, everything, something等及指示代词this, that 作主语时,是第三人称单数。如: Everyone is here. 大家到齐了。 @ There is something wrong with the watch. 这块手表有毛病。 This is a pen. 这是一支钢笔。 That is an eraser. 那是一块橡皮擦。 5、不可数名词作主语时为第三人称单数。如: The milk is in the glass.牛奶在玻璃杯里。 The bread is very small. 那面包很小。 The water is very cold. 那些水很凉。 6、当数字或字母作主语时,看作第三人称单数。如: “7” is a lucky number in western countries, but “8” is a lucky number in China. “7”在西方国家是个吉利数字,但在中国“8”是个吉利数字。 “I” is a letter and a word. “I”既是个字母,又是单词。 : 例题引路: 1、写出下列动词的第三人称单数。 drink ________ go _______ stay ________ make ________ look _________ have_______ pass_______ carry _______ come________ watch________ plant_______ fly ________ study_______ brush________ teach________ 2、用括号内动词的适当形式填空。 1. He often ________(have) dinner at home. 2. We _____________ (not watch) TV on Monday. 3. Nick ___________ (not go) to the zoo on Sunday.

高中英语动词短语考点整理(高考必备)

重点中学高考资源整理 高中英语(全册)动词短语考点汇总 全册A-Z顺序整理,附例句

(1)act短语: act as 担任……职务,起……作用act for 代理(某人职务),代为(处 理某事) act out 表演(对话、故事等)act up 捣乱,出毛病 例如: I acted as an interpreter while I was in Xiamen. Mr Black is acting for the old man in his case. (布莱克先生代那个老人处理他的案件。) The children were acting out the story of the birth of Jesus. He’s a tough kid and he acts up a lot. (2)break短语: break away 摆脱,脱离break away from …脱离……,奋力挣脱…… break down 出故障,坏掉,中止,累垮,分解 break in 打断,插话,闯入,强行进入 break into …闯入……,破门而入 break (sth) off (使某物)折断,中断某事物,突然停止 break out (战争、火灾)突然发生,爆发 break out in tears 突然大哭break the rule 违反规定 break through 突围,冲跨break up 分解,分裂,拆散,碎开 例如: The thief broke away from the police, but was later caught. If you keep on working like that, you’ll break down sooner or later. The car broke down just on my way here. If anyone tries to break in, the alarm will go off. If anyone tries to break into the building, the alarm will go off. She broke off a bit of bread and dipped it in the soup. I broke off the conversation and answered the phone. Does everyone know what to do if a fire breaks out? It may take a long time to break through the problem. In spring the icebergs begin to break up. (3)bring短语: bring about 引起,导致,使发生bring along把……带来,领来 bring back 拿回来,使恢复bring sb back 送回某人 bring sth / sb back to life 使……生动/活泼,使……苏醒 (比较:sth / sb come back to life 复苏,苏醒) bring down 使……降低,减少,使……倒下,使……落下 bring down / up (the price) 降价/提价[比较:(the price ) go down / up 价格 下降/上涨] bring in 引进(技术),赚钱,带来(收入),吸收 bring on 发展,引起,导致,使前进 bring out 拿出,出版,生产,揭露,阐明,使表现出 bring to 使苏醒 bring … to use = put …to use 对……加以利用 bring / carry sth to / into effect实施……(比较:sth come / go into effect 开始

动词第三人称单数变化规则

动词第三人称单数变化规则 1) 一般情况下,动词后面直接加-s. 例如:works gets says reads 2) 以ch,sh,s,x 或o 结尾的动词,在后面加-es。 例如: go-goes teach-,teache wash-washes brush-brushes ,catch-catches ,do-does ,fix -fixes 3) 以辅音字母+ y结尾的动词,把y变为i 再加-es. 例如: study- studies try-tries carry-carries ,fly-flies cry-cries 现在分词变化规则 1.直接+ ing(例:sleep+ing sleeping) 2.去e+ing(例:bite-e+ing biting) 3重读闭音节,且末尾只有1个辅音字母,双写辅音字母+ing(例:sit+t+ing sitting) 4.特殊变化:die-dying,lie-lying,tie-tying 5.不规则变化 现在进行时的基本用法: A 表示现在( 指说话人说话时) 正在发生的事情。 例:We are waiting for you. B. 习惯进行:表示长期的或重复性的动作,说话时动作未必正在进行。 例:Mr. Green is writing another novel. (说话时并未在写,只处于写作的状态。) 例:She is learning piano under Mr. Smith. C.已经确定或安排好的将来活动 I'm leaving for a trek in Nepal next week.(已经安排了) we're flying to Paris tomorrow.(票已经拿到了) D.有些动词(状态动词不用于进行时态) 1.表示知道或了解的动词:believe,doubt,forget,imagine,know, remember,realize,suppose,understand 2.表示―看起来‖―看上去"appear,resemble,seem 3表示喜爱或不喜爱hate,like.lover.prefer 4表示构成或来源的动词be come from.contain,include 5表示感官的动词hear see smell sound taste 6表示拥有的动词belong to.need.own .possess.want wish

高中英语常用动词短语(固定搭配完整版)

动词 及物动词Vt直接跟宾语I love you、 不及物动词Vi 不跟宾语I livein Beijing、 系动词link跟表语Her facebeesred、 助动词aux、v 跟动词原形或分词Would you pleasetellme something about it? 情态动词mod、v跟动词原形We must pete forsurvival、 一、接不定式(而不接动名词)作宾语得24个常用动词?afford to dosth、负担得起做某事 agree to do sth、同意做某事?arrange to do sth、安排做某事 ask to do sth、要求做某事 begto do sth、请求做某事?care to do sth、想要做某事?chooseto dosth、决定做某事?decide todosth、决定做某事?demand to do sth、要求做某事 determineto do sth、决心做某事?expect to do sth、期待做某事?fear to do sth、害怕做某事 help to do sth、帮助做某事 hope to do sth、希望做某事?learn todo sth、学习做某事 manage todo sth、设法做某事?offer to do st h、主动提出做某事 plan to do sth、计划做某事 prepare to dosth、准备做某事?pretend to do sth、假装做某事 promise to do sth、答应做某事?refuse to do sth、拒绝做某事?wanttodo sth、想要做某事 wish to dosth、希望做某事?注:有些不及物动词后习惯上也接不定式,不接动名词: aim to do sth、打算做某事 fail to do sth、未能做某事 long todosth、渴望做某事?happentodo sth、碰巧做某事?hesitate to do sth、犹豫做某事 struggle to do sth、努力做某事 二、接不定式作宾补得36个常用动词?advises b、to dosth、建议某人做某事 allow sb、to do sth、允许某人做某事?ask sb、todo sth、请(叫)某人做某事?bear sb、to do sth、忍受某人做某事 beg sb、to do sth、请求某人做某事?cause sb、to dosth、导致某人做某事 mandsb、to do sth、命令某人做某事drive sb、to do sth 、驱使某人做某事 electsb、to do sth、选举某人做某事encouragesb、to dosth、鼓励某人做某事 expectsb、to do sth、期望某人做某事forbid sb、to do sth、禁止某人做某事?force sb、to do sth、强迫某人做某事 get sb、to do sth、使(要)某人做某事?hate sb、to do sth、讨厌某人做某事 help sb、to do sth、帮助某人做某事?intendsb、to do sth、打算要某人做某事 invitesb、todo sth、邀请某人做某事 leave sb、todosth、留下某人做某事 like sb、to dosth、喜欢某人做某事?mean sb、to do sth、打算要某人做某事?needsb、todosth、需要某人做某事?oblig esb、to do sth、迫使某人做某事?order sb、todo sth、命令某人做某事 permit sb、todo sth、允许某人做某事persuade sb、to do sth、说服某人做某事 prefer sb、to dosth、宁愿某人做某事request sb、to do sth、要求某人做某事 remind sb、to dosth、提醒某人做某事?tea ch sb、to do sth 、教某人做某事?tell sb、to dosth、告诉某人做某事?train sb、to do st h、训练某人做某事?trouble sb、todo sth、麻烦某人做某事?want sb、to do sth、想要某人做某事?warnsb、todo sth、警告某人做某事 wishsb、to dosth、希望某人做某事要表示以上意思,可换用其她表达: 汉语得“原谅某人做某事”,英语可说成excuse[forgive] sb、for doing sth、。?汉语得“希望

(完整版)小学英语一般现在时三单动词的变化规则及练习题(最新整理)

一般现在时三单动词的变化规则及练习题 1.一般情况下,直接加-s 2.以s. x. sh. ch. o结尾,加-es 3.以“辅音字母+y”结尾,变y为i, 再加-es 一、写出下列动词的第三人称单数 drink ________ go _______ stay ________ make ________ look _____ ____ have_______ pass_______ carry ____ come________ watch___ ___ sing_______ fly ________ study_______ brush________ do_______ __ teach_______ 二、用括号内动词的适当形式填空。 1. He often ________(have) dinner at home. 2. Daniel and Tommy __ _____(be) in Class One. 3. We _______(not watch) TV on Monday. 4. Nick _______(not go) to the zoo on Sunday. 5. What _______they often _______(do) on Sundays? 6. _______ your mother _______(read) newspapers every day? 7. Mike _______(like) cooking. 8. I _______(be) ill. I’m in bed. 9. L iu Tao _______(do) not like PE. 10. The child often _______(watch) TV i n the evening. 三、按照要求改写句子 1. He watches TV every evening.(改为否定句) ___________________________________________________ 2. I do my homework every day.(改为一般疑问句,作否定回答) ________________________________________________

高中英语常用动词短语(固定搭配完整版)

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