英语词性讲解ppt课件.pptx

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1、病原体侵入机体，消弱机体防御机能，破坏机体内环境的相对稳定性，且在一定部位生长繁殖，引起不同程度的病理生理过程1、人称代词：代替人或者事物的代词一、代词：代替名词的一类词第一人称：I我we我们第二人称：you你you你们第三人称：he他she她it它they他/她/它们我我们你你们他她它他们主格Iweyouyouhesheitthey宾格meusyouyouhimheritthem 主格:宾格:做主语，放在动词（行为动词、be动词、情态动词）前面。做宾语，放在动词或介词后面。病原体侵入机体，消弱机体防御机能，破坏机体内环境的相对稳定性，且在一定部位生长繁殖，引起不同程度的病理生理过程2、物主代

2、词：表示物体和主人之间的所属关系的代词一、代词：代替名词的一类词我的我们的你的你们的他的她的它的他们的形容词性物主代词myouryouryourhisheritstheir名词性物主代词mineoursyoursyourshishersitstheirs形容词性物主代词:起形容词的作用，后面要加名词，可用在句首或句中。名词性物主代词:起名词的作用，多用在句末。=形容词性物主代词+名词名词所有格:形容词性物主代词和名词性物主代词都是 s，如:Mikes。病原体侵入机体，消弱机体防御机能，破坏机体内环境的相对稳定性，且在一定部位生长繁殖，引起不同程度的病理生理过程3、指示代词：用来指示或标识人或事

3、物的代词一、代词：代替名词的一类词单数指示代词：this这个that那个复数指示代词：these这些those那些 近指 远指1._(this/these)is his hat.2._(this/these)are your English books.3._(that/those)is Mikes dog.4._(that/those)are tomatoes.5.Whose apples are _(this/these)?6.Whose pencil is _(that/those)?病原体侵入机体，消弱机体防御机能，破坏机体内环境的相对稳定性，且在一定部位生长繁殖，引起不同程度的病理生

4、理过程1、实义动词：具有实际意义的动词二、动词如：play玩eat吃drink喝like喜欢read读go去have有watch看有固定搭配的特殊动词（用do来表示所有动词的原形）want想要want to do sth 想要做某事我想要买新的电影杂志I want to buy the new film magazine.like喜欢like doing sth喜欢做某事like to to sth 喜欢做某事（更常用）我喜欢猜字谜I like doing word puzzles.她喜欢唱歌和跳舞She likes singing and dancing.实义动词的几种变形：动词原形(do)

5、、动词单三式(does)、动词过去式(does)、动词不定式(to do)、动词现在分词(doing)、病原体侵入机体，消弱机体防御机能，破坏机体内环境的相对稳定性，且在一定部位生长繁殖，引起不同程度的病理生理过程二、动词2、be动词：am、is、are(3个)，后面加名词或者形容词用法：要根据句子的人称来选择对应的be动词记忆口诀：我用am你用are，is连着他她它，单数is复数are4.I _ drinking milk.5.Sarah and Mike _ singing.6.Wu Yifan _ eating dinner.7.There _ a lake in the park.8.

6、There _ some buildings in the village.(be)(be)(be)(be)(be)1.He _ my brother.(be)2.Miss White _ our English teacher.(be)3.Her name _ Lucy.(be)9.You _ taller than me.(be)病原体侵入机体，消弱机体防御机能，破坏机体内环境的相对稳定性，且在一定部位生长繁殖，引起不同程度的病理生理过程二、动词3、助动词：帮助动词构成谓语的词叫助动词，通常用于否定句和疑问句中常用的助动词：do、does(单数第三人称)、did(过去式)4.She doe

7、snt _(like)playing sports.1.Did you _(see)a film yesterday?2.Does he often _(read)books on Sundays?5.What did he _(do)there?用法：句中出现助动词，后面的实义动词要变回原形3.He didnt _(visit)his grandparents last weekend.6.Where did you _(go)over the winter holiday?病原体侵入机体，消弱机体防御机能，破坏机体内环境的相对稳定性，且在一定部位生长繁殖，引起不同程度的病理生理过程二、动词

8、4、情态动词：表示语气的一类词。常见的情态动词有：can、should、must、will及他们的变形用法：情态动词后面加动词原形5.You should _(see)a doctor.情态动词+do1.I can _(sing)the birthday song.2.Could you _(see)stars at night?3.I couldnt _(ride)my bike well.4.We must _(pay)attention to the traffic lights.6.He will _(cook)noodles for her mother.病原体侵入机体，消弱机体防御

9、机能，破坏机体内环境的相对稳定性，且在一定部位生长繁殖，引起不同程度的病理生理过程疑 问 词:whenwhatwherewhy什么时间为什么which什么哪里哪一个whowhose谁谁的指示代词:thisthatthesethose这个那个这些那些be动词:amisare第一人称第三人称第二人称记忆口诀：我用am你用are，is连着他她它，单数名词用is，复数名词全用are When do you usually get up?What are you going to do this morning?Where is the teachers office?Which season do y

10、ou like best?Why do you like summer?Who is your English teacher?Whose book is this?How怎么样How do you come to school?你什么时候起床你今天上午打算做什么老师办公室在哪里你最喜欢哪个季节你为什么喜欢夏天谁是你的英语老师这是谁的书你怎么来学校的It was sunny.I did my homework yesterday.She played soccer last Sunday.He cleaned his room last week.Did you do your homewor

11、k yesterday?Did she play soccer last Sunday?Did he clean his homework last week?Was it?改成一般疑问句改成一般疑问句They had a summer camp last weekend.My father went to the beach three years ago.Tom and Jack studied for the test three days ago.Did they have a?Did Tom and Jack study?Did your father go to?It was su

12、nny.I did my homework yesterday.She played soccer last Sunday.He cleaned his room last week.didnt do didnt play didnt cleannot改成否定句改成否定句They had a summer camp last weekend.My father went to the beach three years ago.Tom and Jack studied for the test three days ago.didnt have didnt go didnt study1.-H

13、ow _ your vacation?-It was pretty good.A.was B.were C.did2.-Where _ they go yesterday?-They went to the Summer Palace.A.are B.do C.did3.-Where did you go on vacation?-I _ my grandma.A.visit B.visited C.visitsChoose the right answers.4.-Did she _ to the movies?-No.She went to the party.A.goes B.go C.

14、went5.Betty stayed at home and _ for the test last weekend.A.study B.studies C.studied6.-_ your mother go fishing?-No,she didnt.She went shopping.A.Does B.Is C.Did1.I _(have)an exciting party last weekend.2._ she _(practice)the guitar yesterday?No,she _.3.What _ Tom _(do)on Saturday evening?He _(wat

15、ch)TV and _(read)an interesting book.Fill in the blanks with the right form of each word.hadDidpracticedidntdiddowatchedread4.They all _(go)to the mountains yesterday morning.5.She _(not visit)her aunt last weekend.She _(stay)at home and _(do)some cleaning.wentdidnt visitstayeddid1.Lucy did her home

16、work at home.（改否（改否定句）定句）Lucy _ _ her homework at home.2.He found some meat in the fridge（冰箱）（冰箱）.（变一般疑问句（变一般疑问句)_ he _ _ meat in the fridge?Change the sentences.didntdoDidfindany3.There was some orange in the cup.(变一变一般疑问句般疑问句)_ there _ orange in the cup?4.Frank read an interesting book about history.（一般疑问句）（一般疑问句）_ Frank _ an interesting book about history?WasanyDidread