当前位置:文档之家› 英语动词三态变化表(只读保护)

英语动词三态变化表(只读保护)

英语动词三态变化表(只读保护)

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

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.

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

动词单三形式变化规则

动词单三形式的变化规则---------对应时态(一般现在时) 1.一般情况下,直接加-s,如:cook-cooks,milk-milks? 2.2.以s。x。sh。ch。o结尾,加-es,如:guess-guesses,wash-washes,watch-watches go-goes? 3.3.以“辅音字母y”结尾,变y为i,再加-es,如:study-studies? 练习: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________ do_________ teach_______? wash_______? 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 ______ they ________(like)the World Cup?? 6 What _______they often _______(do)on Saturdays?? 7_______ your parents _______(read)newspapers every day?? 8 The girl _______(teach)us English on Sundays。? 9 She and I ________(take)a walk together every evening。? 10 There ________(be)some water in the bottle。? 11 Mike _______(like)cooking。?

(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) ________________________________________________

动词的三单形式变化规则

哪些主语是第三人称单数? 现归纳总结如下: 一、人称代词he, she, it是第三人称单数。如: He likes watching TV. 他喜欢看电视。 He has lunch at twelve. 她十二点吃午餐。 It looks like a cat. 它看起来像只猫。 二、单个人名、地名或称呼作主语;是第三人称单数。如: ①Han Mei looks like her mother. 韩梅看起来像她的母亲。 ②Beijing is in China. 北京在中国。 ③Uncle Wang often makes cakes. 王叔叔经常做蛋糕。 三、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。如: ①A horse is a useful animal. 马是有用的动物。 ②This book is yours. 这本书是你的。 ③That car is red. 那辆小汽车是红色的。 ④The cat is Lucy's. 这只猫是露茜的。 四、不可数名词作主语时为第三人称单数。如: ①The milk is in the glass. 牛奶在玻璃杯里。 ②The bread is very small. 那面包很小。 动词的三单形式变化规则: 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 4. have要变has 一般现在时用法专练: 一、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________ 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. ______ they ________(like) the World Cup? 6. What _______they often _______(do) on Saturdays? 7. _______ your parents _______(read) newspapers every day? 8. The girl _______(teach) us English on Sundays. 9. She and I ________(take) a walk together every evening. 10. There ________(be) some water in the bottle. 11. Mike _______(like) cooking. 12. They _______(have) the same hobby.

动词第三人称单数的变化规则及练习

动词第三人称单数的变化规则及练习 一、使用情况: 在一般现在时中,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,即常在动词原形后加-s或-es。(标志词usually often always sometimes never every等) 二、变化规则 1、直接在动词后+s 例如:like- likes play-plays 2、以s, x, sh, ch, 接尾的动词:+es 例如:wash-washes 3、以辅音+o接尾的动词:+es 例如:go-goes 4、以辅音字母+y接尾的动词:变y为i+es 例如:fly-flies 以元音字母+y接尾的动词后+s 例如:play-plays 5、除上述规律外,还应注意下面三点: 1)动词have ,遇到主语是第三人称单数时,要用has;动词be 的第三人称 单数形式是is。 2)含有动词第三人称单数形式的句子变否定句时,要用doesn't + 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. 3)对含有动词第三人称单数形式的句子提问时,要用助动词does 如:She goes home at five every day. (对划线部分提问)→When / What time does she go 注意:不规则变化:have-----has,be-------is,do-----does

I 写出下列动词的第三人称单数(-s)和现在分词(-ing) go do play jump swim run put sing dance come get have fly study read write look drink eat walk like

常用的 动词三态表

常用的動詞三態表 1 [Am]was[waz]been[bIn]是 2are [ar] were[w3] been [bIn] 是 3 is [Iz] was[waz] been [bIn] 是 4 can [kAn] could[kUd] could [kUd] 能夠;可以 5 do [du] did[dId] done [dVn] 做/ -- 助動 6 have [hAv] had[hAd] had [hAd] 有;吃;喝 7 [wIl] would[wUd] would [wUd] 將;決定;影響 8 [kCst] cost[kCst] cost [kCst] 值(若干);需(價若干) 9 cut [kVt] cut[kVt] cut [kVt] 切;割;砍;剪 10 hit [hIt] hit[hIt] hit [hIt] 打;撞 11 hurt [h3t] hurt[h3t] hurt [h3t] 傷害 12 let [lWt] let[lWt] let [lWt] 讓;允許 13 put [pUt] put[pUt] put [pUt] 放置 14 quit [kwIt] quit[kwIt] quit [kwIt] 戒;停 15 read [rid] read[rWd] read [rid] 閱讀 16 set [sWt] set[sWt] set [sWt] 置;放 17 shut [SVt] shut[SVt] shut [SVt] 關上 18 [sprWd] spread[sprWd] spread [sprWd] 展開;傳布 19 [kVm] came[kem] come [kVm] 來 20 run [rVn] ran[rAn] run [rVn] 跑 21 [bI'kVm] became[bI'kem]become [bI'kVm] 變為;成為 22 [E'wek] awoke[E'wok] awoke [E'wok] 喚醒 23 bring [brI9] brought[brCt] brought [brCt] 攜帶 24 build [bIld] built[bIlt] built [bIlt] 修築;建造 25 buy [b1] bought[bCt] bought [bCt] 買 26 catch [kA7] caught[kCt] caught [kCt] 接住 27 deal [dil] dealt[dWlt] dealt [dWlt] 交易;論及;討論 28 dig [dIg] dug[dVg] dug [dVg] 挖;掘(泥士等) 29 feed [fid] fed[fWd] fed [fWd] 餵 30 feel [fil] felt[fWlt] felt [fWlt] 感覺 31 fight [f1t] fought[fCt] fought [fCt] 打架 32 find [f1nd] found[f0nd] found [f0nd] 發現

动词三单的变化规则及练习

-- 动词三单的变化规则及练习 规则: 1.一般情况下,直接加-s ,如: cook-cooks, milk-milks 2.以 s. x. sh. ch. o 结尾,加-es ,如:guess-guesses, wash-washes, watch-watches, go-goes 3.以“辅音字母 +y”结尾,变 y 为 i, 再加 -es ,如:study-studies 练习 : 写出下列动词的第三人称单数 (60 ’) drink ________ go _______ stay ________ make ________ look _________ have_______ pass_______ carry ________ come________ watch______ plant_______ fly ________ study_______ brush________ teach_______ 填空: (40’) 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.______ they ________(like) the World Cup? 6.What _______they often _______(do) on Saturdays? 7._______ your parents _______(read) newspapers every day? 8.The girl _______(teach) us English on Sundays. 9.She and I ________(take) a walk together every evening. 10.There ________(be) some water in the bottle. 11.Mike _______(like) cooking. 12.They _______(have) the same hobby. 13.My aunt _______(look) after her baby carefully. 14.You always _______(do) your homework well. 15. I _______(be) ill. I ’ m staying in bed. 16.She _______(go) to school from Monday to Friday. 17.Liu Tao _______(do) not like PE. 18.The child often _______(watch) TV in the evening. 19.Su Hai and Su Yang _______(have) eight lessons this term. 20.-What day _______(be) it today? - It ’ s Saturday. 21. --

英语动词单三变化规则及名词单数变复数口诀

动词的第三人称单数现在式变化规则: 1)一般由动词原形加-s get-gets play-plays 2)以e结尾的动词,加-s like-likes make-makes 3)以o结尾的动词加-es go-goes do-does 以s, x, ch, sh等字母结尾的动词,后面加-es kiss-kisses fix-fixes teach-teaches fish-fishes 4)以辅音字母加y结尾的动词,先将y变i, 再加-es fly-flies study-studies 5) have –has 一般现在时 主语+动词原型V I have a friend. You have a friend. We have a friend. They have a friend. 主语(第三人称单数)+动词V(三单) She / He / It has a friend. Tom / My mother has a friend.

名词单数变复数口诀 (一) 规则变化 名词单数变复数,直接加-s 占多数; s, x, z, ch, sh 来结尾,直接加上-es; 词尾是 f 或fe,加-s 之前先变ve; 辅母+ y 在词尾,把y 变i 再加-es; 词尾字母若是o,常用三个已足够, 要加-es 请记好,hero, tomato, potato。 (二) 不规则变化 男人女人 a 变e,鹅足牙oo 变ee; 老鼠虱婆也好记,ous 变ic; 孩子加上ren,鱼鹿绵羊不用变。 This---these(这些) that -- those(那些) 【解说】 1. 英语名词有单数和复数的区别,单数表示“一”,复数表示“多于一。”名词由单数变复数,多数是规则的变,直接加-s,例如:book →books, girl →girls。但以-s, -z, -x, -ch, -sh 结尾的名词,变成复数时加-es, 例如:bus →buses, buzz →buzzes, box →boxes, watch →watch es, brush →brushes 2. -f(e) 结尾的名词单数变复数歌诀:①树叶半数自已黄,妻子拿刀去割粮,架后窜出一只狼,就像强盗逃命忙。②妻子持刀去宰狼,小偷吓得发了慌,躲在架后保己命,半片树叶遮目光。例如:leaf (树叶,叶子),half (一半),self (自已),wife (妻子),knife (刀子),shelf (架子),wolf (狼), thief (窃贼,强盗) 和life (生命),这些名词变成复数时,都要改-f (e) 为v,再加-es。 3. -f 结尾的名词直接加-s 变复数歌诀:海湾边、屋顶上,首领奴仆两相望;谁说他们无信仰,证据写在手帕上。例如:

英语动词单三变化规则及名词单数变复数口诀

英语动词第三人称单数变化规则及 名词单数变复数口诀 一、动词的第三人称单数现在式变化规则: 1)一般由动词原形加-s get-gets play-plays 2)以e结尾的动词,加-s like-likes make-makes 3)以o结尾的动词加-es go-goes do-does 4)以s, x, ch, sh等字母结尾的动词,后面加-es kiss-kisses fix-fixes teach-teaches fish-fishes 5)以辅音字母加y结尾的动词,先将y变i, 再加-es fly-flies study-studies 6) have –has 1、一般现在时 ①主语+动词原型V I have a friend. You have a friend. We have a friend. They have a friend. ②主语(第三人称单数)+动词V(三单) She / He / It has a friend. Tom / My mother has a friend.

2.不规则动词过去式与过去分词分类记忆表 (一)、AAA. (原形,过去式和过去分词一致) 1. 花费 cost cost cost 2. 割 cut cut cut 3. 伤害 hurt hurt hurt 4. 让 let let let 5. 放 put put put 6. 朗读 read read read 7. 设置 set set set 8.打击,碰撞 hit hit hit 9.关上门窗 shut shut shut 10.让 let let let (二)、ABB(过去式和过去分词一致) 1) 过去式、过去分词含有-ought 1. 带来 bring brought brought 2. 买 buy bought bought 3. 打架 fight fought fought 4. 想 think thought thought 5. 寻找、探究 seek sought sought 2) 过去式、过去分词含有-aught 5. 抓住 catch caught caught 6. 教 teach taught taught t替换原形-d 3) 过去式、过去分词- 7. 建筑 build built built 8. 借出 lend lent lent 9. 花费 spend spent spent 10.派遣 send sent sent 4) 过去式、过去分词 在原形词尾加t或d 11. 学会 learn learnt/ed learnt/ed 12. 意思 mean meant meant 13. 燃烧 burn burnt/ed burnted 13. 做梦 dream dreamt/ed dreamt/ed 13. 处理 deal dealt dealt 14. 听 hear heard heard 5) 过去式、过去分词改为-ept 15. 保持 keep kept kept 16. 睡觉 sleep slept slept 17. 扫 sweep swept swept 6) 过去式、过去分词改为-elt

动词单三形式变化规则

. 动词单三形式的变化规则---------对应时态(一般现在时) 1.一般情况下,直接加-s,如:cook-cooks,milk-milks 2.以s。x。sh。ch。o结尾,加-es,如:guess-guesses,wash-washes,watch-watches go-goes 3.以“辅音字母y”结尾,变y为i,再加-es,如:study-studies 练习: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________ do_________ teach_______ wash_______ 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 ______ they ________(like)the World Cup? 6 What _______they often _______(do)on Saturdays? 7_______ your parents _______(read)newspapers every day? 8 The girl _______(teach)us English on Sundays。 9 She and I ________(take) a walk together every evening。 10 There ________(be)some water in the bottle。 11 Mike _______(like)cooking。 如有侵权请联系告知删除,感谢你们的配合! 如有侵权请联系告知删除,感谢你们的配合! 精品

动词第三人称单数变化规则如下

高三英语复习 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 3、现在分词的变化规则: (1)一般情况下,直接在动词后加-ing work ---- working sleep ----- sleeping study ----- studying (2)动词以不发音的-e结尾,要去-e加-ing take ----- taking make ----- making dance ----- dancing (3)重读闭音节的动词,要双写词尾字母,再加-ing cut ----- cutting put ----- putting begin ------ beginning (4)以-ie结尾的动词,把变成y再加-ing lie ----- lying

三态变化习题

物态变化检测题 一、选择题(2X25=50) 1、下列物态变化的实例中不是液化的是() A、秋天,室外花草上的露珠 B、冬天从室外乍进温暖的室内,眼睛片上蒙上一层雾 C、夏天,打开冰箱的门会看到冒“白气” D、到了春天,高山上的积雪开始融化 2、关于水的三态变化的下列说法中,不正确的是() A、给0。C的冰加热,冰会融化成水 B、常温下放在容器中的水减少是蒸发现象 C、标准大气压下100。C的水蒸气冷却后变成水 D、冰直接变成水蒸气是凝华现象 3、北方冬天菜窖里放几桶水,可以使窖内的温度不会过低,菜不致冻坏,这主要是因为() A、水是热的不良导体,不善于传热 B、水的温度比气温高 C、水结冰时要放热 D、水能供给蔬菜水分 4、在冬天,下列办法中不能使洗过的衣服较快变干的是() A、将湿衣服放在炉火旁烘干 B、用电吹风炊湿衣服 C、将湿衣服折叠起来晾晒 D、将湿衣服放到暖气片上 5、用电风扇对着液体温度计吹,温度计的示数会() A、升高 B、降低 C、不变 D、无法确定 6、下列现象中由于凝华造成的是() A、放在厕所里去异味用的芳香球逐渐变小了 B、冻鱼出冷库后比进冷库前重 C、永久了的灯泡的灯丝比新你细 D、碘受热后冒出紫色的蒸汽 7、在下列现象中,不属于汽化现象的是() A、新鲜大白菜会慢慢干瘪 B、冰棒从冰箱中取出时冒“白气” C、夏天湿衣服晾干 D、酒精擦在皮肤上会很快变干 8、下列关于沸腾和蒸发的说法正确的是() A、蒸发在任何温度都能进行,所以不需要吸热 B、蒸发和沸腾都是汽化现象,都会放出热 C、蒸发时液体温度降低,沸腾只有达到沸点才能进行 D、蒸发和沸腾都可以在液体表面和内部进行 9、夏天,打开冰棒的包装纸,常常会看见冰棒在冒“白气”,其原因是() A、冰棒融化产生的小水滴 B、冰棒周围的水蒸气遇冷液化而成的小水珠 C、冰棒周围的空气遇冷液化而成的液滴 D、冰棒熔化后蒸发产能的水蒸气 10、火箭在大气中飞行时,它的头部跟空气摩擦发热,温度可达几千摄氏度。在火箭上涂一层特 殊材料,这种材料在高温下熔化并且汽化,能防止烧坏火箭头部的作用,这是因为() A、熔化和汽化都放热 B、熔化和汽化都吸热 C、熔化吸热,汽化放热 D、熔化放热,汽化吸热 11、下列说法中正确的是() A、家用寒暑表可以检测开水的温度 B、人的正常体温是38。C C、用温度计测液体的温度,读数时要让玻璃泡留在被测也体中 D、可以用体温计测量20。C的水的温度 12、下列属于升华现象的是() A、“白气”的形成 B、樟脑球变小 C、霜的形成 D、冰的熔化 13、下列属于液化现象的是()

完整word版,三单动词的变化规则

三单动词的变化规则 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 一般现在时用法专练: 一、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________ 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. ______ they ________(like) the World Cup? 6. What _______they often _______(do) on Saturdays? 7. _______ your parents _______(read) newspapers every day? 8. The girl _______(teach) us English on Sundays.

相关主题
文本预览
相关文档 最新文档