一般现在时总结.pptx
目录一 定义二 谓语形式三 句式变换四 课堂练习第1页/共35页一一 定义定义一般现在时表示经常或习惯性的动作或一般性事实,也可表示现在的状态或主语具备的性格和能力。通常与副词every day（每天），always（总是）,usually（通常）,often（经常）sometimes（有时）,等时间状语连用。第2页/共35页（1）表示事物或人物的特征、状态。The sky is blue.天空是蓝色的。Marys father is an English teacher.玛丽的爸爸是一名英语老师。（2）表示经常性或习惯性的动作。I get up at six every day.我每天六点起床。She plays sports every day.她每天都做运动。第3页/共35页（3）表示客观现实。The table has four legs.桌子有四条腿。There are 50 students in my class.我们班有50个学生。（4）表示客观真理，科学原理，自然现象，等客观事实或格言谚语等。The sun rises in the east every day.太阳每天从东方升起。The earth goes around the sun.地球绕着太阳转。（5）表示平日的喜好。I like bananas.We dont like vegetables.He likes ice cream.She doesnt like strawberries.第4页/共35页二二 一般现在时谓语一般现在时谓语一般现在时谓语由动词原形表示,但主语为第三人称单数时,谓语动词要加S或ES,其变化规则如下:动词三单形式的变化规则：1.（1）多数直接在动词词尾加-s.play plays like likes ask-asks work-works get-gets call-calls第5页/共35页（2）以字母s,x,ch,sh或o结尾的动词，在词尾直接加-es.watch-watches wish-wishes do-does go-goes （3）以“辅音字母加-y”结尾的动词，要先变y为i再加-es.try-tries study-studies cry-cries fly-flies2.不规则变化：be-is have-has第6页/共35页归纳：第三人称单数人称代词he,she,it是第三人称单数。He likes watching TV.他喜欢看电视。She has lunch at twelve.她十二点吃午单个人名、地名或称呼作主语是第三人称单数。Han Mei likes salsd .韩梅喜欢萨拉。Beijing is in China.北京在中国。Uncle Wang often plays volleyball.王叔叔经常打排球。第7页/共35页单数可数名词或this/that/the+单数可数名词作主语时，是第三人称单数。This book is yours.这本书是你的。That car is red.The cat is Lucys.这只猫是露茜的。不可数名词作主语时为第三人称单数。The milk（牛奶）is in the glass.牛奶在玻璃杯里。The bread is very small.那面包很小。当数字或字母作主语时，看作第三人称单数。6 is a lucky number.6 是个吉利数字。I is a letter.I 是个字母。第8页/共35页EX2EX2 1.Tom often_(get)up at six in the morning 1.Tom often_(get)up at six in the morning 2.The earth _(go)around the sun.2.The earth _(go)around the sun.3.Marys parent _(live)in Beijing.3.Marys parent _(live)in Beijing.4.She _(draw)very well.4.She _(draw)very well.Ex1.写出下列词的单三形式：写出下列词的单三形式：look;go;give;fly;have looks;goes;gives;flies;has getsgoeslivesdraws第9页/共35页三 一般现在时的句子转换一般现在时的构成：肯定句：主语is/am/are其它成分.He is an office worker.主语(除第三人称单数)动词原形其它成分.I get up at six every day.主语(第三人称单数)动词s/es 其它成分.My father usually goes to work by bus.第10页/共35页1)变一般疑问句:当句子中有be动词或情态动词时,则把be动词或情态动词(can,could等)提到主语的前面 句式结构：Am/Is/Are+主语其它成分?肯定:Yes,主语+be.否定:No,主语+be+not.It is a tall tree.Is it a tall tree?Yes,it is./No,it is not.第11页/共35页 注意：当句子中没有be动词，也没有情态动词时，变一般疑问句时，在主语前加助动词do(I,we,you,以及复数),does（第三人称单数she,he,it等）变成问句；第12页/共35页Do+主语(除第三人称单数)动词原形其它成分?肯定:Yes,主语+do.否定:No,主语+do+not.The Greens often go swimming in summer?Do the Greens often go swimming in summer?Yes,the Greens do./No,the Greens do not.第13页/共35页Does+主语（第三人称单数）动词原形其它成分?肯定：Yes,主语+does.否定：No,主语+does+not.The earth goes around the sun.Does the earth go around the sun?Yes,the earth does./No,the earth does not.第14页/共35页 一般疑问句的回答：一般疑问句的回答：注意：一般用什么问就用什么来回答。但以下例外但以下例外：Is this a pencil?Yes,it is./No,it isnt.Is that your backpack?Yes,it is./No,it isnt.Are these your parents?Yes,theyre./No,they arent.Are those Jims brothers?Yes,theyre./No,they arent.第15页/共35页1、He found some meat in the fridge.（变一般疑问句)_ he_ _ meat in the fridge?2、There was some orange in the cup.（变一般疑问句)_ there _ orange in the cup?DidfindanyWasany第16页/共35页2）变否定句：在be动词或情态动词后面直接加not变成否定句.(be后not莫忘记)例：陈述句：She is my sister.否定句 She is not my sister.陈述句：I can play soccer.否定句 I can not/cant play soccer.第17页/共35页注意：变否定句时，在主语后谓语动词前加助动词dont,doesnt变成否定句，切记：助动词后的动词则还原成动词原形。陈述句：We get up（起床）at 7:00 every morning.否定句We dont get up at 7:00 every morning.陈述句：She has a brother.否定句 She doesnt have a brother.第18页/共35页3）特殊疑问句句式结构：疑问词is/am/are+主语(其它成分)？What time is it now?疑问词do+主语动词原形(其它成分)？When do you usually go to bed?疑问词does+主语（第三人称单数）+动词原形（其它成分）？Where does Jim do his homework on weekdays?第19页/共35页ExercisExerciseses第20页/共35页Is he happy?Yes,he is happy.Is he strong?Yes,he is strong.第21页/共35页What is it?It is a cat.Is she busy?Yes,she is busy.第22页/共35页Am I sad?No,I am happy.Is it very hot?Yes,it is very hot.第23页/共35页He is happy.否定句否定句:一般疑问句一般疑问句:肯定回答肯定回答:否定回答否定回答:He is not(isnt)happy.Is he happy?Yes,he is.No,he isnt.第24页/共35页I am happy.否定句否定句:一般疑问句一般疑问句:肯定回答肯定回答:否定回答否定回答:I am not happy.Are you happy?Yes,I am.No,I am not.疑问句要求把疑问句要求把BE 提前，第一人称变成第二人称。提前，第一人称变成第二人称。第25页/共35页They are in the classroom.否定句否定句:一般疑问句一般疑问句:肯定回答肯定回答:否定回答否定回答:They are not(arent)in the classroom.Are they in the classroom?Yes,they are.No,they arent.第26页/共35页肯定式否定式疑问式肯定否定回答I am a teacher.I am not a teacher.Am I a teacher?Yes,I am.No,I am not.He/she is a teacher.He/she is not a teacher.Is he/she a teacher?Yes,he/she is.No,he/she isntIt is a cat.It is not a cat.Is it a cat?Yes,it is.No,it isnt.We/You/They are teachers.We/You/They are not teachers.Are we/you/they teachers?Yes,we/you/they are.No,we/you/they arent.动词动词be一般现在时的构成一般现在时的构成第27页/共35页get up water the flowersI get up at 6:35 in the morning.She waters the flowers.第28页/共35页play footballwatch TVThey play football in the playground.He watches TV in the sitting-room.第29页/共35页否定句否定句:一般疑问句一般疑问句:肯定回答肯定回答:否定回答否定回答:I get up at 6:35 in the morning.I do not(dont)get up at 6:35 in the morning.Do you get up at 6:35 in the morning?Yes,I do.No,I dont.对于实意动词，疑问句要求：当主语是他对于实意动词，疑问句要求：当主语是他(he)，她，她(she)，它，它(it)时，句子前面加时，句子前面加DOES，并把动词恢复原形；当主语是其他，并把动词恢复原形；当主语是其他人称时，句前加人称时，句前加DO，第一人，第一人(I/we)称换第二人称称换第二人称(you)。第30页/共35页They play football in the playground.否定句否定句:一般疑问句一般疑问句:肯定回答肯定回答:否定回答否定回答:They do not(dont)play football in the playground.No,they dont.Yes,they do.Do they play football in the playground?第31页/共35页Ex1.将下列各句从肯定式改为否定式将下列各句从肯定式改为否定式1.I talk to Peter because I like him.2.Kate comes from America.Kate works with Peter3.I am Chinese,and I am a student.4.They know each other.I dont talk to Peter because I dont like him.Kate doesnt come from America.Kate doesnt work with Peter.I am not Chinese,and I am not a studentThey dont know each other.第32页/共35页1.Her parents live in Shanghai.否:Her parents_ in Shanghai.疑：_ her parents_ in Shanghai?.2.You study English.否：You study English.疑：you study English?3.How often Tom football?A.is,play B.do,play C.does,play D.does,plays dont liveDo livedoDo C第33页/共35页1.Jim usually _(have)lunch at home.2.Li Guanhua _(be)twenty years old.3.How many students _(be)there in your class?4.-_ she _(study)hard?-Yes,she _.5.Lucy and lily _(not speak)Chinese.6.My father _(not do)morning exercises every day.7.She always _(wash)her clothes on Sundays.8._ your brother _(like)playing football?No,he _.用所给动词一般现在时态填空用所给动词一般现在时态填空:第34页/共35页谢谢您的观看！第35页/共35页
