2022新人教版八年级上册《英语》非谓语动词-不定式ppt课件.pptx

1、一般现在时一般过去时一般现在时一般现在时现在进行时06.The weather here is very cold.07.People are wearing cool clothes here.08.Summer starts in December.09.She can speak a little Chinese.10.Ma Taos aunt came back to China this year.一般现在时现在进行时一般现在时一般现在时一般过去时1.1.一个英语句子有且仅有一个谓语动词。一个英语句子有且仅有一个谓语动词。2.2.谓语动词有时态的变化谓语动词有时态的变化。目录CONT

2、ENTS1.I started playing the piano at four.2.It is good to see snow.3.You are welcome to visit Sydeny.4.He can help his mother clean the room.5.I want to buy some flowers.6.She likes reading.一个句子有两个谓语动词？一个句子有两个谓语动词？有的谓语有时态变化，有的又没有？有的谓语有时态变化，有的又没有？一个句子中，如有两个动词一个句子中，如有两个动词其中一个动词有时态变化，其中一个动词有时态变化，那个动词就是

3、谓语动词，那个动词就是谓语动词，如果没有时间变化的，如果没有时间变化的，那个动词就是那个动词就是.非谓语动词1.啥是非谓语动词？2.非谓语动词有哪些样儿？3.非谓语动词怎么使？1.啥是非谓语动词？目录CONTENTS主要指在句中主要指在句中不能充当谓语，不能充当谓语，而是充当其他语法功能的动而是充当其他语法功能的动词词,没有人称，数和时间变化。没有人称，数和时间变化。在句中可以充当主语:Smoking is bad for your body.宾语:We found it important to study English.表语:Her job is to clean the hall.定语

4、:I have a meeting to attend.状语:He worked day and night to get the money.宾语补足语:I saw him cross the road.2.非谓语动词有哪些样儿？I wanted to buy some flowers.非谓语动词谓语动词1.To see is to believe.2.I hoped to succeed in learning English.3.Your task is to clean the classroom.4.I expect you to give me some help.5.Let us

5、 give him something to eat.6.He spoke loudly to be heard.主语宾语表语宾补定语1.To teach is to learn twice.2.To do morning exercises is good for our health.3.To catch the 5:00 bus early in the morning is not a good idea.4.It is not a good idea to catch the 5:00 bus early in the morning.1.不定式作主语时，会有对比之意。2.若不定式结

6、构比较复杂，常用it作形式主语，真正的主语放在句子的后面，这种情况更常见。1.His dream is to be a doctor.2.My work is to clean the room every day.3.My wish is to become a teacher.不定式作表语，表示将来的情况，说明主语的内容。其主语常常是wish,idea,task,purpose,duty,job等表示意向、打算、计划的词。to clean1.The driver failed to see the other car in time.2.He cant afford to buy the

7、expensive car.3.I think it useful to learn a foreign language.4.I feel it my duty to say that you are wrong.不定式作宾语，常跟在某些动词后。decide/determine,learn,choose,plan,refuse,promise,want/attempt,pretend,offer,manage,expect/wish/hope,agree,ask/beg,help,prepare,threaten,tend,claim,desire/long,apply,fail,hesit

8、ate1.We think it our duty to clean our classroom every day.2.I feel it difficult to understand the math questions.若不定式结构比较复杂，通常用 it 作形式宾语，真正的宾语放在句子的后面，该用法常见的动词有think,find,make,believe,consider,suppose,feel等。It形式宾语结构：主语+谓语+it+adj./n.+to do sth1.I heard her sing today.She sang wonderfully.2.She was he

9、ard to sing today.3.I saw him enter the room.4.He was seen to enter the room.5.Dont make the workers do such heavy work.6.The workers were made to work 10 hours a day.不定式在感官动词和使役动词后作宾补要省略to,但变为被动语态时，to不能省略。常见动词有feel（一感），listen to/hear（二听），let/make/have（三让），look at/see/watch/notice（四看）。【主动无to，被动有to】1

10、.Let us give him something to eat.2.We have much homework to do tonight.3.Are you going to attend the meeting to be held next Monday?4.She was the first woman to win the gold medal in the games.5.Do you have the ability to read and write in English?6.I have no chance to go sightseeing.1.不定式作定语常放在名词或

11、不定代词后面作后置定语，表示尚未发生的动作。2.名词前有first,last,next,only等词以及最高级修饰时，其后要用不定式。3.抽象名词attempt,ability,chance,desire,determination,decision,plan,way或不定代词something,nothing等后面常用不定式作后置定语。1.To see distant people clearly,he has to wear glasses.2.They took me away from my work just to ask me some questions.3.What has h

12、e done to make you so happy?4.The boy is old enough to go to school.5.She was not so stupid to do that.6.I worked hard only to fail at last.7.There is no doubt that Mrs.Li will be glad to look after the boy.动词不定式作状语可表示目的、原因及结果等。作目的状语，通常放在句末；为了强调目的或意义，也可放在句首；作结果状语，可用于enough to,so.as to,such.as to,onl

13、y to.以及too.to等结构中。1.When to start has not been decided.2.The question is how to do the job well.3.He told me where to find the book.疑问词“what,how,when,where,which动词不定式”结构可作主语、表语和宾语等。熟记三种结构1.They had no choice but to move.2.He could do nothing but wait for the bus.3.It hurt so much that I couldnt help but cry out in pain.1.have no choice but to do没有选择，只能做.2.can/could do nothing but do 不得不做3.cant/couldnt help but do 不得不做上集完