todo不定式公开课课件.ppt

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1、 Unit2 Grammar by HopeWarming up:Enjoying a piece of music.Try to remember some lines.InfinitiveWhat am I gonna do to make you love meWhat am I gonna do to make you careWhatll I do when lightning strikes meAnd to wake and find that youre not thereWhatll I do to make you want meWhat am I gonna do to

2、be heardWhatll I say when its all overSorry seems to be the hardest wordI like recite lyricsoI advised him to give up smoking.oBrother Long advised him _ _ _ _ smoking.oHe promised me to study hard.oHe promised Long_ _ _ hard.Step 1 基本形式和否定形式基本形式和否定形式肯定式肯定式:to do 否定式否定式:not to donot to give upnot to

3、 study 动词不定式的时态和语态动词不定式的时态和语态His mother opened the door to see if he was studying.Wei zhen expected to be praised by his mother,so he pretended to be studying.一般式一般式(to do/to be done).不定式的一般式所表不定式的一般式所表示的动作（状态）示的动作（状态）_Step 2与谓语同时发生或发生在谓语动词之后。.进行式进行式(to be doing)They seemed to be talking about somet

4、hing secret when I came in the classroom.如果谓语表示的动作如果谓语表示的动作（情况）发生时，不（情况）发生时，不定式所表示的动作正定式所表示的动作正在进行。在进行。.完成式（完成式（to have done/to have been done)2.Im pleased to have been given this chance to express(表达)to her.1.You seemed to have written a love letter to Lily.如果不定如果不定式的动作式的动作发生在谓发生在谓语之前。语之前。如果不定式的逻辑主

5、语是不定式所表如果不定式的逻辑主语是不定式所表示的动作的承受者，不定式要用示的动作的承受者，不定式要用被动被动形式形式.语态语态时态时态主动语态主动语态被动语态被动语态一般时一般时 进行时进行时完成时完成时 小小 结结to doto be doneto be doing/to have done to have been done练习练习1.Hello!Its good _(see)you again.2.Bye-bye,Im glad _(see)you.3.They pretend _(work)hard when the teacher came in.4.The girl studen

6、ts is said _(send)abroad last week.5.He is said _(study)abroad,so he got the position of mananger.To do like that is foolish.I want to see you this evening.All you have to do is to finish it quickly.We found a house to live in.She came here to study English.I warned the patient not to eat cold water

7、 after the operation.主语主语 宾语宾语表语表语 定语定语 状语状语 宾补宾补Step 3 Step 3 不定式的用法不定式的用法_is our duty._is a right choice=It is a right choice to give up smoking.1.帮你戒烟是我们的责任。2.戒烟是正确的选择。不定式短语作主语时，如果不定式短语作主语时，如果主语如果太长，主语如果太长，常常用用it 作形式主语，真正的不定式主语后置。作形式主语，真正的不定式主语后置。To help you give up smokingTo give up smokingStep

8、4 作主语作主语 Step 4 作主语作主语 1.It is kind of you to help me.2.It is good for your health to stop smoking.3.It took me three months to get rid of the bad habit.4.It cost me a lot of money to buy cigarettes.一般用不定式做主语的句型 It+be+adj./n.+for sb.to do sth./of sb.to do sth.It+take+sb.+time+to do sth.It+cost+sb.+m

9、oney+to do sth.Step 4 作主语作主语 1.It is good for your health to stop smoking.2.It is necessary for you to drink more water.3.It is important for you to have more fruit.如何确定如何确定for 和和of?Step 4 作主语作主语 4.It is kind of you to help me.5.It is selfish of you to ask me to continue to smoke.6.It is frank of yo

10、u to tell me the truth.oIt is clever _you _(make)so many toy ships.oIt is necessary _us _(be)polite in class.oIt is careless _you _(make)lots of mistakes.oIt is very nice _ you _(get)me two tickets to the world cup.oIt is good _ us _(play)spots every day.oI often have hamburgers for lunch.Youd bette

11、r not.Its bad_ you _(eat)too much junk food.牛刀小试牛刀小试Step 5作宾语作宾语oI _you to study English.oDo you know _me?oI think it important_plan to help how to help to recite English words.动词不定式动词不定式动词不定式动词不定式作作宾宾语语动词动词+to do动词动词+疑问词疑问词+to do 动词（动词（think,consider,make,believe等)+it+宾补宾补+to do常见动词有常见动词有 afford,ag

12、ree,arrange,ask,decide,demand,plan desire,expect,hope,learn,manage,offer,pretend,promise,refuse,wish,prefer,happen,intend,fail等等I dont know what to do.I find it important to learn English.只能接不定式作宾语的动词只能接不定式作宾语的动词口诀：口诀：决心学会想希望决心学会想希望 拒绝设法愿假装拒绝设法愿假装 主动答应选计划主动答应选计划 同意请求帮一帮同意请求帮一帮decide/determine;learn;

13、want;hope/wish/expectrefuse;manage/attempt;care;pretendoffer;promise;choose;planagree;beg;helpMake sentencesmake more moneyMake sentences plan buy the carMake sentences expect have the sports meetingMake sentencesrefuse finish the homeworkTeam workoWrite three pieces of advice to Wei Zhen to help him to give up smoking.You should use infinitive in these sentences.Homework:o1.背诵并默写不定式时态和语态的表格。o2.看例句，复习笔记要点。o3.思考哪些动词后接to do与 doing意思不同