1、新人教版选择性必修四 Unit 3Review useful structuresReview of the infinitiveContents:1.不定式用法回顾2.巩固练习不定式用法回顾Part 01不定式(Infinitive),一般指动词不定式，是指动词中的一种不带词形变化,从而不指示人称、数量、时态的一种形式,属于非谓语动词的一种。动词不定式不定式的形式动词不定式主动被动一般式to doto be done表示动作发生在谓语动词所表示的动作之后完成式to have doneto have been done表示动作发生在谓语动词所表示的动作之前进行式to be doing/表示动作
2、与谓语动词所表示的动作同时发生完成进行式to have been doing/表示动作在谓语动词所表示的动作之前一直进行 I plan to attend the meeting to be held tomorrow.(attend的动作在plan之后发生)They are said to be studying psychology.(be said与study同时发生)Im very sorry to have kept you sitting around doingnothing.(keep发生在be sorry之前)No harm seems to have been done.(
3、do发生在seem之前,且harm与do之间是被动关系)She is known to have been dealing with the problems for many years.(在be known之前,一直在处理)动词不定式可以在句中充当什么成分？As the subject(S)主语主语 As the predicative(P)表语表语As the object(O)宾语宾语 As the object complement(OC)宾补宾补As the attributive(Attr)定语定语 As the adverbial(Ad)状语状语阅读下列课文原句，并指出句中的不
4、定式充当什么成分。To complete the great map of the world was a strong passion for.Marco Polos tales inspired European explorers to search for sea routes from west to east.Here,merchants from China and many other places met to negotiate trade deals.These fleets were a sight to behold and were in a league of t
5、heir own at that time.To reach out across the sea remains a strong desire today.The aim of this initiative is to encourage cooperation and.(S)(OC)(Ad)(Attr)(P)(S)Trading has grown greatly.,and will continue to do so in years to come.which will help to greatly develop the whole area for the benefit o
6、f future trade and cultural exchange.there are still many other places left to explore.there is an urgent need to study the Arctic in order to understand climate change and its effects.the need to trade and the desire to enhance relationships will drive China to reach out across the sea far into the
7、 future.(Attr)(O)(O)(Attr)(Attr)(Ad)(Attr)(Attr)(OC)不定式作主语：To get there by bike will take us half an hour.It took him a long time to become a good dancer.It is generous of him to contribute so much.It is important for us to live a low-carbon life.It seemed impossible to complete the task.骑车去那里成为一个好舞
8、者完成任务不定式作表语：He seems to be ill.Her wish is to be a teacher.My dream is to write a book about my life.We are to meet at the school gate at three.The goal of this activity is to meet the needs of common people.病了成为一名老师写一本关于我生活的书三点钟在校门口见面满足需求不定式作宾语：We agreed to give Tom a second chance.I happen to know
9、 the answer to your question.We think it our duty to protect the environment.We think it important to learn a foreign language well.Dont forget to turn off the light before you leave.The flowers want/need/require to be watered once a week.再给Tom一次机会知道你问题的答案保护环境学好一门外语不要忘记关灯浇 水 He didnt allow the stude
10、nts to go there.Father reminded us not to play on the street.Alice saw him enter the building.He was seen to enter the building.We consider Tom to be one of the best students in our class.He was made _(work)day and night.不定式作宾补：允许学生去那里不要在街上玩进入了大楼是最好的学生之一to work I have nothing to say to you.The abili
11、ty to express an idea is as important as the idea itself.There is nothing to worry about.He is looking for a room to live in.He is always the first to arrive at the school and the last to leave the school.不定式作定语：对你说表达观点担 忧居 住到 达离 开 To learn more about Chinese culture,Jack has decided to come to Chin
12、a for further study.To help us prepare for the exam,the teacher suggested reading through our notes.They were glad to see their son taken good care of.In order not to lose his job,Tom kept quiet about the accident.He hurried to the school,only to find nobody there.不定式作状语：为了学更多的中国文化为了帮我们备考看到他们的儿子被照顾好
13、为了不丢掉工作竟然发现没人在那巩固练习Part 021.Join the words to make sentences using infinitives.Then decide the function of each infinitive.(P29)1.He/encouraged me/participate in the surfing competition2.The storm/seems/be getting closer3.Magellan/was the first person/sail around the world4.The UN peacekeeping force
14、/aims/maintain peace and prevent armed conflicts1.He encouraged me to participate in the surfing competition.2.The storm seems to be getting closer.3.Magellan was the first person to sail around the world.4.The UN peacekeeping force aims to maintain peace and prevent armed conflicts.OCPAttrO5.The cr
15、owd/stood/applaud/scientists/for their important ocean research work6.It is a good idea/tax/plastic bottles/so that people use them less7.The Jiaolong manned submersible/is said/be able/reach 7 km underwater8.It remains/be seen/whether or not his capsule can work5.The crowd stood to applaud scientis
16、ts for their important ocean research work.6.It is a good idea to tax plastic bottles so that people use them less.7.The Jiaolong manned submersible is said to be able to reach 7 km underwater.8.It remains to be seen whether or not his capsule can work.AdAttrO;OO2.Read the beginning of The Little Me
17、rmaid and use the proper forms of the verbs in brackets to fill in the blanks.(P29)Far out in the ocean,where the water is as clear as glass,lives the Sea King.The ocean is too deep _(measure).We may imagine there is nothing except yellow sand under the sea,but actually it is not rare _(see)the most
18、 unique flowers and plants _(dance)in the fast-moving water.In the deepest spot of all stands the Sea Kings castle,which has walls of coral and a roof _(form)of beautiful shells.to measure to see dancingformedThe mother of the king,a wise woman who is proud _(be)born into the royal family,takes care
19、 of his six daughters.Among the six sea-princesses,the youngest is the prettiest.Although she has delicate skin like a rose-leaf and eyes as blue as the deepest sea,she has no feet but a fish tail just like her sisters.The most common way for the princesses _(play)all day long is _(swim)in the halls
20、 of the castle or among the flowers growing out of the walls,feeding and touching the fish _(swim)up to their hands through the windows.They seem_(not worry)about anything,except for the youngest,who to have been to play swimming/to swim swimming not to worry 3.Complete the sentences.1._,youd better
21、 keep this card at hand.为了更容易与我们取得联系,你最好把这张卡片放在手边。2.I remember I told my mom more than once that I hoped _.我记得我不止一次告诉我妈妈我希望将来追求演艺事业。3.The old man sits in front of the television every evening,happy _.老人每晚坐在电视机前,高兴地看电视上碰巧播放的任何内容。To make it easier to get in touch with us/To get in touch with us more e
22、asilyto pursue an acting career in the futureto watch anything that happened to be on4.The airport _ will help promote tourism in this area.明年竣工的机场将会帮助推动该地区的旅游业发展。5.He has a heart trouble and _.他有心脏病,医生发现很难治疗。6.The man opened his eyes,_.那人睁开眼睛,却发现房间里只剩下他一个人。only to find himself left alone in the roomthe doctor finds it difficult to treatto be completed next yearHomework：1.2.Thanks
