高中英语外研版 (2019)必修 第三册Unit 3 The world of science复习课件ppt

这是一份高中英语外研版 (2019)必修 第三册Unit 3 The world of science复习课件ppt，共42页。PPT课件主要包含了现在完成时的被动语态，语境体验，现在进行时的被动语态，过 去 将 来 时，过去将来时的结构，省 略，offered， 实例探究，实例探究，walking等内容，欢迎下载使用。

Unit3-6 语法知识
There have been glden ages f inventin thrughut histry. But nw we find urselves in the great new age f technlgy because mst f the new great inventins are tech-based. As we can see, imprtant advances have been made in medicine and envirnmental science thanks t increasing cmputer pwer. Fr example, new inventins like 3D printers have been used t make replacement hearts and bne parts.
一、现在完成时的被动语态的结构
基本结构：has/have+been dne
二、现在完成时的被动语态的用法 1、表示一个被动的动作在说话之前已完成，强调过去的动作对现在造成的影响和结果，常与already, yet, just ,never, recently,ever since, s far, up t nw, in/ver/during the last/past few years等时间状语连用。 2、表示一个被动的动作或状态从过去开始一直延续到现在，常与fr或since引导的时间状语连用。 3、用在时间或条件状语从句中，表示将来已完成的被动动作，即用现在完成时的被动语态代替将来完成时的被动语态。 Yu shuldn't watch TV befre yur hmewrk has been finished.
Hell , everyne! This bradcast is being brught t yu frm the largest museum n Earth--the Luvre. At the mment, I am being pushed arund a bit in the mst crwded area f the Luvre. I am sure yu are ging t lve this masterpiece f Lenard da Vinci. Yes, it's Mnalisa, which really attracts s many visitrs every day. Abut 35,000 wrks are currently being displayed in the Luvre. I really hpe yu can visit this fantastic place ne day t feel the pwer f these great wrks f art.
一、现在进行时的被动语态的结构
基本结构：am/is/are+being dne
二、现在进行时的被动语态的用法1. 表示说话时或现阶段正在进行或发生的被动动作，强调主语是动作的承受者。2. 表示一种经常性的被动行为，和always, cnstantly等表示频率的副词连用, 常常带有赞扬或厌恶的感情色彩。例如：He is always being praised by the teacher.3.“be+ in/n/under+名词”常含有被动含义，可代替现在进行时的被动语态。如：The highway is under repair.
Last year, hundreds f peple spent gd mney n an experience that wuld include crwds, discmfrt and danger. Many wuld becme sick,due t the extreme cld and lw air pressure, and a few wuld even lse their lives. But why did s many peple make this chice? Arnette, wh climbed Qmlangma in 2011 and was ging t climb ther high muntains arund the wrld, said that yu shuld fcus n the reasn that's mst imprtant and unique t yu.
基本结构：wuld/shuld d
二、过去将来时的用法1. 表示从过去某一时间看将要发生的动作或存在的状态，常用于宾语从句中，“立足过去，着眼未来”。2. 表示过去的某种习惯的行为（不管什么人称，都用wuld ）。如：Whenever he had time, he wuld help villagers with their wrk.
三、过去将来时其他几种表达方式
1、was/were ging t d 表示过去打算或计划将要做某事。如：I was ging t run this mrning, but verslept.2、was/were abut t d 表示过去即将发生的动作，不和表示时间段的状语连用。如：Tm was abut t leave the ffice when the telephne rang.3、was/were t d 表示过去的计划或注定要发生的事。 如：He said he was t arrange his hliday with his family in a week.
4、过去进行时也可表示将来，但仅限于某些位移的动词。如：cme, g, arrive, leave等，表示按计划或安排将要发生的事。如：I didn't knw when they were cming t explre the il again.5、表示过去情况中的“愿望”、“倾向”，多用于否定句。如：They knew that we wuld never permit such a thing.6、用在虚拟语气的主句部分，表示对现在或将来的虚拟。如：If I were yu , I wuld accept the suggestin.
1. When _______( ffer) help, ne shuld say “Thank yu.”r “It's kind f yu.”2. It sunds like smething is wrng with the car's engine. If____, we'd better take it t the garage.
状语从句省略：如果从句主语与主句主语一致，或者从句主语是it,且从句谓语含有动词be, 那么从句中的主语和谓语动词be往往可以省略。
根据中文提示填空：1. 你无法想象我们在暴风雪中步行回家费了多大的劲。 Yu can't imagine what difficulty we had _______ in the snwstrm.
在动词ing形式前介词的省略现象，常见的短语有： be busy (in) ding； have difficulty (in)ding sth. spend time (in)ding sth. There is n use/pint/need (in) ding sth.
2. 为了安全，老师们建议家长不要允许自己12岁以下的孩子骑自行车去上学。Teachers recmmend parents __________ their children under 12 t ride bicycles t schl fr safety.
在与suggest (建议), request, rder, advise, recmmend等词相关的名词性从句中，应用虚拟语气，即从句谓语用“shuld +动词原形”，shuld 可以省略。
True r false.1. Much prgress is being made in science and technlgy in China. 2. At present, a new library is built n ur schl campus. 3. Hw lng has this prject been started?
True r false.4. With the ppulatin increasing, mre land is being needed.5. We didn’t knw whether he is ging t speak at the meeting.6. I was nt sure when she wuld cme, but when she came I wuld let yu knw.
1. Traditinal flk arts like paper cutting ___________________________________ nw.  像剪纸这样的传统民间艺术品正在文化展上被展出。2. I feel very puzzled that the gds in ur shp___________________ 我感到很迷惑, 我们商店的商品总是被偷。
exhibited at the culture shw
are always being stlen.
3. I _______________ the huse when the earthquake happened. 我正要离开房子，这时地震发生了。4. In the last few years，thusands f films ________________ all ver the wrld.在过去的几年中，全世界有数千部电影被制作完成。
was abut t leave
have been prduced
5. She said she _________________ tw tickets in advance.她说她打算提前订两张票。6. He said that he _____________fr me at the schl gate. 他说他会在学校门口等我。
was ging t reserve
1.With mre frests being destryed, huge quantities f gdearth ____ each year.    A. is washing away            B. is being washed away    C. are washing away           D. are being washed away
2.The lcal gvernment annunced that nly when the fire was under cntrl ____ t return t their hmes.A. the residents wuld be allwedB. had the residents been allwed C. wuld the residents be allwed D. the residents had been allwed
3.Albert Einstein was brn in 1879. As a child, fewpeple guessed that he ____a famus scientist whse theries wuld change the wrld. A．has been  C．was ging t be  B．had been  D．was
4. In my hmetwn, there is always a harvest supper fr the farmers after all the wheat ______ cut. A. will have been B. will be C. was D. has been
5. After schl we went t the reading rm t d sme reading , nly t be tld that it________.A. was decratedB. had decratedC. had been decratingD. was being decrated
6. As yu g thrugh this bk, yu____ that each f millins f peple wh lived thrugh Wrld War II had a different experience. A. will find B. fund C. had fund D. have fund
When I was yung, I had a dream that I ___________( have) a chance t visit the Palace Museum in the future. _________ (frtunate), nw I am standing in this well-knwn museum where many art wrks and cultural relics_________________(display). Sme parts f the museum are______ repair s that these precius relics can be prtected better . S far, cuntless turists all ver the wrld ________________(attract) by the museum , _____ yu can experience the Chinese histry and traditinal culture.
are being displayed
have been attracted
书面表达： 假如你是李津，你的笔友Frank被你就读的学校--天津大学录取，即将于今年9月来津求学。请你根据以下提示给Frank写一封邮件。 1. 对他被天津大学录取的消息表示祝贺； 2. 介绍一下你在天津大学的学习和生活； 3. 表示愿意提供他帮助和建议。 提示：请运用今天所学时态，完成标注部分的写作。
I am glad t knw that yu have been admitted t Tianjin University. Please allw me t send my warm cngratulatins.As a student in Tianjin University, let me intrduce smething abut my study and life. Since I was here , I have enjyed it very much because f the strng learning atmsphere where almst everyne tries their best t study. Besides, nw varius club activities and art shws are being carried ut t enrich the students' life and braden their hrizns.
课后作业1、复习这四个单元语法内容，总结归纳要点。2、完成语法练习，巩固知识点。
语法填空1.My washing machine ________ (repair) this week, s I have t wash my clthes by hand.2. Lucy has fund that a lt f antelps ______(hunt) and killed fr the wl beneath their stmachs nw.3. A lt f activities __________ （rganize)by ur scial clubs nw in ur shcl in rder t enrich the life f students after class.
4.I _________ (cme) t visit yu later that day, but I had t phne and cancel.5. Despite the previus runds f talks, n agreement _______(reach) s far by the tw sides.6. What happened when the authr was abut ________( take ) a pht?
1. 关于这项任务的所有准备工作都已就绪，我们准备开始了。2. 教室正在被学生们用鲜花和气球装饰，学生们正在为新年派对做准备。3. 在读大学的时候，贝拉克•奥巴马不知道他会成为美国第一位黑人总统。4. 以前只要他有时间，他就会帮妈妈做一些家务。
参考答案：语篇填空：1. is being repaired 2. are being hunted 3. are being rganised 4. was ging t cme 5. has been reached 6. t take
参考答案：翻译句子：1. All the preparatins fr the task have been made, and we are ready t start.2. The classrm is being decrated with ballns and flwers nw and students are preparing fr the New Year Party.
参考答案：翻译句子：3. At cllege, Barack Obama didn't knw he wuld becme the first black president f the United States f America. 4. Whenever he had time, he wuld help his mther with the husewrk.