高中英语人教版 (2019)选择性必修 第四册Unit 3 Sea Exploration图片ppt课件

这是一份高中英语人教版 (2019)选择性必修 第四册Unit 3 Sea Exploration图片ppt课件，共32页。PPT课件主要包含了目录页，Lead-in ，Lead-in，动词不定式的构成，not to do，sb to do，to sing，to enter，目的 ，结果 等内容，欢迎下载使用。
Review and cnclude
Practice and apply
Read the fllwing sentences and analyze what functins the clred part serves as in each sentence.
1. T cmplete the great map f the wrld was a strng passin fr the peple f early civilisatins.2. Marc Pl’s tales inspired Eurpean explrers t search fr sea rutes frm west t east.3. Merchants frm China and many ther places met t negtiate trade deals.4. T reach ut acrss the sea remains a strng desire tday. 5. The aim f this initiative is t encurage cperatin and trade acrss the histric Silk Rad areas.
6. This will help t greatly develp the whle area fr the benefit f future trade and cultural exchange.7. There are still many ther places left t explre.8. China has jined ther natins n several expeditins t explre the Arctic.9. There is an urgent need t study the Arctic in rder t understand climate change and its effects.10. The need t trade and the desire t enhance relatinships will drive China t reach ut acrss the sea far int the future.
基本形式：t d否定形式:
t have been dne
t have been ding
● t d 表示的动作通常与谓语动词的动作 _______ 发生或在其 _______ 发生。
① I asked him t attend the meeting.② The theme park, t be pened in 2025, will attract peple all ver the cuntry.
二、动词不定式的时态和语态
① He seems t be reading English pems.② He seems t be thinking deeply, withut nticing me verpassing him.
● t be ding 强调动作正在进行，或与谓语动词动作________。
① He is said t have translated the bk int English last year. ② He claimed t have been badly treated in the supermarket when he was ding shpping yesterday.
● t have dne 表示的动作在谓语动词 __________ 发生。
① Her sn is knwn t have been studying abrad fr a while.② She is said t have been writing the nvel abut New Yrk fr many years.
● t have been ding 表示在谓语动词 _____________________。
1. 作主语：不定式做主语时，可以直接放在谓语动词之前。
T see is t believe．Nt t get there in time is yur fault.
注：常用it作形式主语，将t d放在谓语之后，使句子保持平衡。
句型1：It + 谓语 + t d句型2：It’s + n + t d
It takes us an hur _______ (get) there by bus.
It is a great enjyment _________ (spend) ur hliday in the muntains.
三、动词不定式的句法作用
1. It is very kind ___ yu t give me sme help.2. It’s implite ___ yu t speak t the teacher like that.
句型3：It is adj fr / f sb t d sth It is + adj + fr sb t d sthIt is + adj + f sb t d sth
1. It is easy ______ me t finish this wrk befre ten. 2. It is a great hnr _______ us t be present at yur birthday party.
＝ Yu are very kind t give me sme help.　
＝ Yu are implite t speak t the teacher like that.　
T d tw things at a time is _________ (d) neither. T see is _________ (believe).1) 如果主语是不定式 （表示条件），表语也是____________（表示结果） （一致性）。 He is t marry Rse. He was abut ________ (enter) when he heard a cry.2) be t d, be abut t d 结构表示 时，系动词 be, appear, seem, prve后用 作 。
His wish is ________ (buy) a car in the near future. The mst imprtant thing is __________ (take) measures t prevent the pllutin. 3) 如果主语内容是以aim, duty, hpe, idea, happiness, jb, plan, prblem, purpse, thing, wish等为中心的名词，不定式作表语对________的______作具体说明。
常见动词有：want, decide, agree, wish, hpe, prmise, chse, need
3. 作宾语；如：want t d
I want t knw this matter.I dn’t expect t meet yu here.
1. They wanted _______ (get) n the bus, didn’t they?2. He said he wished _______ (be) a prfessr.3. I agreed ________ (g) there with the dctr.4. My daughter preferred _______ (dance) when she was in her twenties.5. He had prmised ________ (give) me a hand.
口诀: 想要决定同意，希望许诺选择需要
注意句型：it作形式宾语，如：find it + adj + t d
I find / feel t wrk with him interesting．I find / feel _______ interesting t wrk with him.
注意：不定式短语作宾语时，如果还带有宾语补足语，往往把不定式宾语放在宾语补足语 ，而用it作 。
subject + find / think / feel / make / cnsider it + adj / n + t d sth
1.We thught __ better ______  (start) early. 2. D yu cnsider ___ better nt _____ (g)?3. I feel __ my duty ________ (change) all that. 4. We think __ imprtant __________ (bey) the law.5. I knw __ impssible ________ (finish) s much hmewrk in a day.
4. 作宾语补足语；如：tell sb t d sth
宾语与宾语补足语之间的关系实际上是逻辑上的 。
1. Mther tld me _____ cme back befre 10 ’clck. 2. I’ll get smene ________ (repair) the recrder fr yu. 3. What caused him _________ (change) his mind? 4. I wish yu _______ (cme) as sn as pssible. 5. He asked me _______ (d) the wrk with him.
advise, allw, ask beg, cause (导致), expect encurage, frce get, hate, invite rder, wishwant, warn, remindprmise, permitpersuade, request …
see watch lk athearlisten t feelnticebserve
make, let, have
seen watched lked atheardlistened t feltnticedbserved
注意：当这类动词转为 时，其后的不定式则要加 “t”。
1. He is ften heard ________ (sing) the sng.2. He was seen _________ (enter) the rm.
不定式作定语时一般修饰________________。
1) I wrked s late in the ffice last night that I hardly had time t catch the last bus. 2) D yu want t see the dctr t be sent fr frm Beijing?3) The meeting _____________ (hld) tmrrw is very imprtant.
eg. I have smething t tell yu.
1) I came here t see yu．2) We were very excited t hear the news．3) He hurried t the schl nly t find nbdy there. 4) T lk at him, yu wuld like him．
不定式作状语，表示 等。
目的、原因、结果或条件
attributive
bject cmplement
predicative
agree, allw, invite, warn, happen t find / think / cnsider / feel it + adj t d it + adj t d sth
It is + adj + (fr / f sb) t d sth.It takes sb time t d sth
In rder t / T ..., ... s as t ..., t ... t ..., enugh t ..., nly t ...
invite, allw, encurage
There is n need fr sb t d sth is time (fr sb) t d sth ...
1. It is pssible (walk) r bike the entire 14 kilmeters. (2021 全国甲)2. Activities there range frm whale watching t hiking and accmmdatins aim (have) a lw impact n the natural envirnment. (2021 全国乙)3. Much f this increase can be due t climate change. The findings shw a critical need (invest) in disaster preventin. (2021 北京)4. Mary became a baker at age 14, because her grandfather paid the lcal baker ________ (teach) her all the skills. (2021 天津)
Fill in the blanks with the crrect frm.
Instant exercises
5. Yu are said ____________________ (write) a new nvel these years. Have yu finished it? 6. She was very busy and had n time _________ (visit) her friends. 7. The market was nisy, s the man had t speak ludly in rder ____________ (hear). 8. She pretended _______________ (knw) me befre and greeted me warmly.9. The flu is believed ____________ (cause) by viruses that like t reprduce in the cells inside the human nse and thrat.10. The ld lady was heard ____________ (unlck) the dr and g ut.
t have been writing
t have knwn
t be caused
Far ut in the cean, where the water is as clear as glass, lives the Sea King. The cean is t deep ___________ (measure). We may imagine there is nthing except yellw sand under the sea, but actually it is nt rare ___________ (see) the mst unique flwers and plants __________ (dance) in the fast-mving water. In the deepest spt f all stands the Sea King’s castle, which has walls f cral and a rf ___________ (frm) f beautiful shells. The mther f the king, a wise wman wh is prud ___________ (be) brn int the ryal family, takes care f his six daughters. Amng the six sea-princesses, the yungest is the prettiest.
Read the beginning f The Little Mermaid and use the prper frms f the verbs in brackets t fill in the blanks.
t have been
Althugh she has delicate skin like a rse-leaf and eyes as blue as the deepest sea, she has n feet but a fish tail just like her sisters. The mst cmmn way fr the princesses __________ (play) all day lng is ________________ (swim) in the halls f the castle r amng the flwers grwing ut f the walls, feeding and tuching the fish __________ (swim) up t their hands thrugh the windws. They seem __________ (nt wrry) abut anything, except fr the yungest, wh …
swimming / t swim