初三英语复习《动词不定式》PPT课件.ppt

动词不定式,肯定：to+V.原 或者(to)+V.原 否定：not/never+(to)+V.原,He likes to read novels.I saw him come.We decided not to buy that house.4)It is interesting to fly a kite.5)Please let him not go there.,动词不定式的结构,作主语,To hear your voice is so nice.To study hard is very important.,It is so nice to hear your voice.,It is very important to study hard.,不定式作主语时，通常用it作形式主语，把真正的主语放在后面。,注意:,1、It is+adj.for/of sb.to do sth.,It+be+adj.+for/of sb.to do sth.for:adj.多为描述不定式行为的特征（important/necessary/interesting 等.）of:adj.多为 描述主语的品质特征（kind/nice/friendly/wise/foolish 等.）,作主语,It is easy _ her to learn English well.It is clever _ you to solve the problem.,of,for,2、It takes sb.some time to do sth.,It takes me three hours to finish the homework every day.,作主语,我每天花去三个小时完成家庭作业。,I spend three hours finishing the homework every day.,3、It is+n.(for sb)to do sth.,It is my pleasure to help you with your English.,作主语,4、用在谚语中,To see is to believe.,To say is easy,but to do is hard.,作主语,1、It is necessary _us to learn to wait.(of/for)2、It was careless _me to break the cup.（of/for)3、It took them 1,000 yuan _this table.(buy)4、It is my pleasure _ the box for you.(carry),to buy,for,of,to carry,练习,5、轮到我们打扫教室了。It is our turn_6、To waste time is to shorten life.（翻译成中文）,to clean the classroom.,浪费时间就是缩短生命。,练习,1、动词+to do sth.常用动词有：want/wish/like/would like/hope/plan/try/decide/learn/need/agree/begin/start/forget/remember/manage/seem/fail/manage/promise等,1、I hope to finish it tomorrow.2、She plans to go and teach in the country.,作宾语,2、动词疑问词+to do,I dont know_ next.She cant decide_.,作宾语,2、她不能决定买哪本书。,1、我不知道接下来该做什么。,what to do,which book to buy,=She cant decide which book she should buy.,1、Dont forget _.(关灯)2、I happened _when he called me.（出去）3、I dont want_.(依赖别人）4、Sam is learning_.(怎样开车）5、We promise _ the environment.(保护),to turn off the light,to go out,to depend on others,how to drive a car,练习,to protect,1、动词+宾语（sb./sth.)+to do sth.,1、The teacher asked her to answer the question.2、The doctor told me to have a good rest.,作宾补-对宾语进行补充说明,常用动词有：ask,tell,allow,want 等,动词多为感官动词、使动词。一感：feel二听：hear,listen to三使：make,let,have四看：see,notice,watch,look at,Johns mother makes him play the piano every day.,被动：,John _ play the piano every day.,is made to,2、动词+宾语+不带to的不定式,1、Let him _ the work at once.(finish/to finish)2、Do you like listening to other people_?(talk/talking/to talk)3、Jim was seen _the room.(enter/to enter)4、Please tell her _here on time.(come/to come),finish,talk,to enter,to come,练习,5、Ill help you _this problem.(to solve/solve)6、I wish you will stay with us.(改成简单句）7、Her story made us laugh.(改成被动句）,(to)solve,I wish you to stay with us.,We were made to laugh by her story.,1、主语+be+to do sth 主语多为 duty/wish/hope/idea/plan/ambition/dream/work/job 等 名词,1、My ambition is to be a singer.2、His work is to clean the classroom every day.,作表语,我的梦想是成为一名歌手。他的工作是每天清扫教室。,2、谚语中,1、To know everything is to know nothing.2、To see is to believe.,放在被修饰词的后面,I have a lot of work to do.I want to find something to drink.,作定语,不定式为不及物动词时后面应有必要的介词。,Im looking for a hotel _.A.stay B.stay at C.to stay D.to stay at,D,位置：,He hasnt got a house to live_.,I have no pens to write _.,in,with,1、原因状语:主语+be+adj.(表情感)+to do sth.(happy/glad angry/sorry/sad/afraid 等),Im sorry to hear that.,作状语,Im glad to see you.,2、目的状语,The soldier ran into the room to save the girl.,_ _ the soldier run into the room?,Why did,Many parents send their children abroad _.(深造学习),to further their studies,3、结果状语 too+adj./adv.+to do sth.adj./adv.enough to do sth.,You are too young to do this job.,He ran fast enough to catch the bus.,动词不定式可以充当的句子成分,1、作主语,2、作宾语,3、作宾语补足语,4、作表语,5、作定语,6、作状语,All I did was to give him some advice.His dream is to travel all over the world.Lucy needs a friend to play with.He was the last guest to arrive.Its interesting to read a science fiction.,下列不定式作何种成分？,（表语）,（表语）,（定语）,（定语）,（主语）,He was glad to see you.My father offered to buy a computer for me.He interviewed detective Ken to get some information.The doctor asked him to have more fruit and vegetables.,（状语）,（宾语）,（状语）,（宾语补足语）,下列不定式作何种成分？,1、习惯于be used to _ 被用于be used to _Water is used to _(put)out fires.I am used to _(take)a walk after supper.2、prefer to 比起来更喜欢 比起游泳来，我更喜欢跑步。I prefer _ to _.3、look forward to 期待，盼望Im looking forward to _(visit)Beijing again.,介词 to 与不定式 to 的区别,put,taking,running swimming,visiting,do,doing,