动词不定式(初二)-(共18张)课件

1、动词不定式1动词不定式1动词不定式的结构动词不定式是“to+动词原形”构成的一种非谓语动词结构。否定形式是“not to do”结构。动词不定式没有人称和数的变化，在句中不能单独做谓语。动词不定式可在句子中作主语、表语、宾语、宾补、定语和状语，但不能单独作谓语。2动词不定式的结构动词不定式是“to+动词原形”构成的一种非谓动词不定式做主语1不定式置于句首。例如：To teach English is my happinessTo see is to believe.3动词不定式做主语1不定式置于句首。例如：32用it做形式主语把真正的主语不定式置于句末，常用于下列句式中。It +be+名词+t

2、o do sth.Its our duty to protect the water.Its my turn to play basketball.It takes sb. +some time +to do sth.It takes me five days to finish this work.42用it做形式主语把真正的主语不定式置于句末，常用于it+be+形容词+for sb.+to do sthIt is important for us to keep healthy.It+be+形容词+of sb.+to do sthIt is very kind of you to help

3、 me.5it+be+形容词+for sb.+to do sth5不定式作宾语。宾语是动作、行为的对象，是动作的承受者，可由不定式来担任。1以下动词可以接带to的动词不定式做宾语。如：hope，wish，would like, want, love，help，learn, decide，prefer，agree，ask，chooseYou can choose to writeI wish to go to Beijing for my holiday.I decided to learn computer.I would like to fly kites this afternoon.6不

4、定式作宾语。宾语是动作、行为的对象，是动作的承受者，可由形式宾语动词make，think，find，feel等词后面可以用it做形式宾语来代替句子真正的宾语一动词不定式，其结构为：makethinkfindfeel+it+adj.n+to do sthI find it easy to understand the problemI feel it very interesting to study English with himWe all think it impolite to speak loudly in public7形式宾语动词make，think，find，feel等词后面不

5、定式做表语不定式可放在be动词之后，形成表语，不定式做表语表示具体动作或将来的动作。My job is to teach English.My task is to find out the cost for the bus.8不定式做表语不定式可放在be动词之后，形成表语，不定式做表四、不定式做定语不定式在句中做定语，置于被修饰的名词或代词之后。I have some books to read.To read是修饰前面的名词books的定语。Do you have anything to tell him?To tell him在这里是修饰前面的代词anything。Would you p

6、lease give me a room to live in?不定式在这里是修饰前面的名词room的。9四、不定式做定语不定式在句中做定语，置于被修饰的名词或代词五、不定式作宾语朴足语一些及物动词除要求接宾语外，有时还需要有宾语补足语。说明宾语的行为、状态、特征。这时意思才相对完整。常要求不定式做宾补的动词有：allow，tell ，ask，advise，invite，force(强迫)，encourage，would like，order, teach，want ，wish等。He invited me to go shopping with himMiss Wang teaches us

7、 to play the piano.allow sb. (not) to do sthtell sb. (not) to do sthask sb. (not) to do sthadvise sb. (not) to do sthinvite sb. (not) to do sthforce sb. (not) to do sthencourage sb. (not) to do sthWould like sb. (not) to do sthorder sb. (not) to do sthteach sb. (not) to do sthwant sb. (not) to do st

8、hwish sb. (not) to do sth10五、不定式作宾语朴足语一些及物动词除要求接宾语外，有时还需要在主动语态中，感官动词和使役动词后接不定式做补语时，不带to。常见的动词有：一感feel； 二听hearlisten to；三让makelethave；四看seelook atwatchobserve。Michael makes Tom work 10 hours every day.I often see Lucy play football on weekends.make sb. do sth.see sb. do sth.11在主动语态中，感官动词和使役动词后接不定式做补语

9、时，不带to六、不定式做状语1做目的状语to doin order to do表示“为了，为”在句中作目的状语。I went there to(in order to) see what will happenHe worked very hard to change his lifeI get up early to catch the early bus. 12六、不定式做状语1做目的状语122做原因状语其结构为sb.+be+adj.+to do sthThey are very happy to come to my partyWe were very excited to hear t

10、he news.I am sorry to hear that.132做原因状语其结构为sb.+be+adj.+to do s3做结果状语当一个句子中有too或enough时，(tooto；enough to结构中)，常用不定式来做结果状语。Tom is too young to go to school.Tom is not old enough to go to school.She is too young to do the work=She isnt old enough to do the work143做结果状语当一个句子中有too或enough时，(to找出Unit6 Topi

11、c 1含不定式的句子I have some exciting news to tell you.It will take us a few days to get there by bike.Its too far to cycle.You need to find the cost for the bus.Id love to go by plane.Well decide on the best way to travel on our field trip.定语主语结果状语宾语宾语定语15找出Unit6 Topic 1含不定式的句子I have sI want to book some

12、rooms.Its common to raise money in Canadian and American schools.It costs each student one dollar to buy a ticket for the draw.The student can use the headmasters cellphone to call home.I have great news to tell you.宾语主语主语宾语补足语定语16I want to book some rooms.宾语主语Spring is the best time to climb Mount Tai.There are many interesting places to visit there.So we decided to take the train.I also called to book some rooms.So Michael advised us to raise money.定语定语宾语宾语宾语补足语17Spring is the best time to cliThe best way to rais