英语必修 第三册Unit 4 Space Exploration教课ppt课件

这是一份英语必修 第三册Unit 4 Space Exploration教课ppt课件，共24页。PPT课件主要包含了会发现，to do，to be done，to come，被动式，介词in，不定式，plans，to change，to take等内容，欢迎下载使用。
③I happened t be watching TV when she called.她打电话来时，我恰巧正在看电视。④They seem t have cleaned the huse.他们似乎已经打扫过这个房子了。⑤The factry is reprted t have been burnt dwn.据报道这家工厂已经被烧毁了。
t have been dne
[明规则]1．不定式的一般式：表示不定式的动作与谓语动词同时(几乎同时)发生或在谓语动词之后发生。2．不定式的进行式：表示不定式的动作正在进行且与谓语动词同时发生。3．不定式的完成式：表示不定式的动作发生在谓语动词之前。[对点练]　(用所给词的适当形式填空)①Tell her we'll be delighted ________ (cme)．②He pretended _____________ (fall) asleep when little Tm came t him. ③He seems ____________(think) abut the questin right nw.④The questin _______________ (discuss) tmrrw is abut the pllutin. ⑤The bk is said t ___________________(translate) int fur languages s far.
t have fallen
t be thinking
t be discussed
have been translated
二、动词不定式的句法功能1．作定语 [先感知]①The car t be bught is fr his sister.要买的这辆车是给他姐姐的。②The Greens have a cmfrtable huse t live in.格林一家有一幢舒适的房子居住。③... n 12 April 1961, Yuri Gagarin became the first persn in the wrld t enter space.1961年4月12日，尤里·加加林成为世界上进入太空的第一人。
④She said she had n plans t g there.她说她没有去那里的打算。[会发现]（1）句①中t be bught作定语，用了不定式的_________。（2）句②中t live in作定语，修饰a cmfrtable huse，_______不能省略。（3）句③中the first＋n.后用_________作定语。（4）句④中名词_________后常用不定式作定语。
[明规则]1．不定式作定语，置于被修饰词之后，常表示未发生的动作。2．作定语的不定式如果是不及物动词，或不定式所修饰的名词或代词是不定式动作的地点、工具等，不定式后面需有相应的介词。3．当中心词为序数词、最高级及the last, the nly 等或中心词被这类词修饰时，多用不定式作定语。4．有些名词也常跟不定式作定语，常见的有 prmise, plan, ffer, decisin, ability, warning等。
[对点练]　(1)单句语法填空①Agriculture gave peple their first experience f the pwer f technlgy __________ (change) lives. ②I'm ging t Beijing next week. I have a lt f things _______ (take) with me.③He was the first ne ___________ (think) f the idea. ④The manager is the last persn ________ (cme) t the meeting. ⑤And fr parents there are lst pprtunities ___________ (walk) and talk with their yung schlar abut their day.
(2)完成句子 ①She usually has a lt f meetings __________in the evenings.晚上她经常有很多会议要参加。②She was the first wman _______________________in the Olympic Games.她是在奥运会上第一位获得金牌的女性。③The villager will tell yu the secret path__________.这位村民将告诉你要走的秘密小道。④I am lking fr a rm_____________.我正在找一间屋子住。
t win the gld medal
2．作状语[先感知]①They make vehicles t carry brave peple int space t find ut the secrets f the universe.他们研制出飞行器，将勇敢者送入太空，去探寻宇宙的奥秘。②I'm glad t meet yu. 很高兴见到你。③I hurried t the statin, nly t find the train had left.我匆匆赶到车站，结果发现火车已经开走了。
④The by is ld enugh t g t schl.那个小男孩足够大，可以上学了。⑤He is t weak t d the wrk.他身体太弱了，不能做这项工作。⑥She was t happy t meet her friend in the street.在街上见到她的朋友她很高兴。⑦The bx is easy t carry.这个箱子易携带。
[会发现]（1）句①中t find ut ...表示______。（2）句②中t meet ... 表示______。（3）句③中nly 后接t d，表示______________。（4）句④中enugh后接不定式，表示_______。（5）句⑤中t ... 意为________________。（6）句⑥中t happy后接 t d，表示________意义。（7）句⑦中t carry作状语，修饰表语______。
[明规则]1．不定式作状语表示目的、原因和结果，表示原因、结果时一般不置于句首。2．某些形容词作表语，表示“喜、怒、哀、乐”，后跟不定式常表示原因。3．不定式作结果状语表示意外的结果，常在不定式前面加上nly。4．“形容词/副词＋enugh＋不定式”结构中，不定式表示结果。5．“t ... t ...”结构常表示“太……而不能”，但t之前如果有nly，则不定式表示肯定。nly t表示“非常，很”。6．t后如果是happy, glad之类的形容词，不定式表示肯定意义。7．在“be＋性质形容词＋不定式”结构中，不定式t d用主动形式表示被动意义。常见的形容词有 easy, hard, difficult, interesting, heavy, pleasant, light, gd, fit, cmfrtable, safe, dangerus, impssible等。
[对点练]　(1)用所给词的适当形式填空 ①(2024年新高考Ⅰ卷)These sepals pen n warm days t _____ (give) the inside plants sunshine and fresh air.②(2025年全国Ⅰ卷)__________ (enrich) ur schl life, ur English newspaper will add a new clumn.③(2024年浙江高考)Hwever, if yu're shpping fr ne, buying extra ________(benefit) frm price reductins desn't make sense.④(2023年全国甲卷)Fr thusands f years, peple have tld fables (寓言) __________(teach) a lessn r t pass n wisdm. ⑤Tm kept quiet abut the accident s as nt ________ (lse) his jb.
(2)完成句子①She is prud _____________________ the cmpetitin. 她对于参加了比赛感到很自豪。②Smetimes, I was________________________, s my educatin suffered. 有时候，我身体太虚弱了不能上学，因此我的功课变差了。③Mst parents will have eagerly asked their child abut their day, ___________________a “gd”， quickly fllwed by “I'm hungry”. 大多数父母都会急切地问他们的孩子一天过得怎么样，只会得到一个“好”，紧接着是“我饿了”。
t have taken part in
t weak t g t schl
nly t meet with
[新知突破]　Astrnauts' bnes and muscles can get very weak in space due t the lack f gravity, s they need t exercise every day, which will help them stay healthy.由于缺乏重力，宇航员的骨骼和肌肉在太空中会变得非常脆弱，所以他们需要每天锻炼，这将有助于他们保持健康。 ★lack n．缺乏；短缺vt.没有；缺乏[以文化人]①Lack f knwledge is darker than night.缺少知识的处境比黑夜更黑暗。
[应用融会]　(完成句子)②_______________ exercise leaves yur bdy weak and easily affected by disease.缺乏锻炼让你身体虚弱，容易遭受疾病的侵袭。③Mre and mre high-rise buildings have been built in big cities _____________space.因为缺乏空间，在大城市里越来越多的高楼大厦已经被建造。④Jim's real prblem is that he_________________.吉姆的真正问题是他缺乏自信。⑤Thugh Jack was ____________ experience, he made up fr it in enthusiasm.虽然杰克缺乏经验，但是他以满腔的热情来弥补不足。
A lack f/Lack f
lacks cnfidence
Ⅰ.单句语法填空1．If yu dn't like smething, yu almst always have the pwer ___________(change)it.2．The ability _____________(dwnlad) apps can enrich a visitr's experience.3．He is ne f the first scientists ____________ (study) uter space.4．My family's flight was delayed, s we were the last grup _____________(arrive)．5．Befre the Spring Festival, many peple travel hme _____(see) their family.
6．As a senir high schl student, yu must make effrts __________(imprve) yur cmmunicatin and prblem­slving skills.7．____________ (publish) their researches in jurnals, scientists have t wrk hard, even withut financial reward.8．We hurried there, nly _________ (find) a nte pinned n the dr, infrming us f the delay f the meeting.
Ⅱ.完成句子1．I think digging wells fr drinking water is a gd way_________________________________.我认为挖井取水是解决缺水问题的好方法。2．I decide t emply every pprtunity___________________________ .我决定利用一切机会练习我的英语口语水平。3．I treasure this as a gd chance ______________________as well as imprve my spken English.我珍惜这个好机会来开阔我的视野、提高我的英语口语。
t slve the prblem f
water shrtage
t practise my spken English
t braden my hrizns
4．Tu Yuyu is the first Chinese scientist _______________the Nbel Prize in Physilgy r Medicine.屠呦呦是第一位被授予诺贝尔生理学或医学奖的中国科学家。5．She has turned dwn several invitatins t star at shws in rder _______________________.为了专心于她的学习，她已经拒绝了几次参加演出的邀请。
t be awarded
t cncentrate
n her studies
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