高中英语人教版 (2019)必修 第二册Unit 2 Wildlife protection授课课件ppt

这是一份高中英语人教版 (2019)必修 第二册Unit 2 Wildlife protection授课课件ppt，文件包含Unit2SectionⅡpptx、Unit2SectionⅡdoc等2份课件配套教学资源，其中PPT共26页， 欢迎下载使用。

Sectin Ⅱ　Discvering Useful Structures
语法点拨一、现在进行时的被动语态的基本结构
A new library is being built nw.一座新图书馆正在被修建。Sme disabled children are nt being lked after well enugh.目前一些残疾儿童没有受到足够好的照顾。Is the bridge being repaired nw?现在那座桥在修吗？What is being dne n the new medicine?目前正在针对这种新药物做什么？Hw many bridges are being built in the twn?在这个镇里在建的桥有多少？
主动语态变被动语态的原则“三变”原则：原主变为by短语，原宾变为现主语；谓语主动变被动“三不变”原则：原句意思不变；原句时态不变；原句主谓宾以外成分不变。
单句语法填空①The grammar which ___________________(learn) nw is easy t master.②Sme animals ______________________(prtect) well enugh nw.③The sprts meeting ________________(hld) in ur schl at present.④(2018·天津高考)My washing machine ____________________ (repair) this week, s I have t wash my clthes by hand.
is being learned　
are being prtected　
is being held　
is being repaired　
二、现在进行时的被动语态的基本用法1．表示正在进行或发生的被动动作，常与nw，lk等词连用。She is being examined by the dctr nw.现在她正在被医生检查。2．表示现阶段或目前这段时间正在进行的被动动作，但这一被动动作在此时不一定正在发生。The life f the panda is being studied at present.现在正在研究大熊猫的生活习性。
3．表示按计划、安排主语将要承受某个动作。Sme rck music is being played by them next.下面将由他们演奏一些摇滚音乐。4．表示一种经常性或习惯性的被动行为，常与always，frever，cntinually，cnstantly等词连用，往往带有赞扬、责备、厌烦及埋怨等感情色彩。Tm is always being praised by the teacher.汤姆总是受到老师的表扬。
单句语法填空①(江苏高考)Nw similar cncerns ___________________(raise) by the giants that deal in data, the il f the digital age.②Lk! She ______________________(criticize) by the teacher in the ffice.③The milu deer _______________________(study) at the research centre these days.④A man has been arrested and _____________________(questin) nw.
are being raised　
is being criticized　
is/are being studied　
is being questined　
三、使用现在进行时的被动语态应注意的问题1．在现在进行时的被动语态中，be (am/is/are)为第一助动词，being为第二助动词，缺一不可，且位置不可互换。My cmputer is being repaired nw.我的电脑现在正在被修理。(强调正在被进行)2．像take care f，lk after，talk abut，think f等动词与介词构成的短语动词用于现在进行时的被动语态时，其中的介词不可省略。Smething is being talked abut amng thse peple.那些人正谈论着某件事情。
3．“be (am/is/are)＋under/in＋n.”有时可相当于现在进行时的被动语态。The schl is still under cnstructin nw.＝The schl is being built nw.学校现在正在建设中。The new law is in use.＝The new law is being used.这项新法律正被使用。
4．有些动词进行时的主动形式就可以表示被动的意思，常见的这些动词有：print，ck，fry，bake，burn，hang等。The huse is burning.房子着火了。The meat is cking.正在煮肉。
5．有些表“状态、心理活动、情感”等的动词，常用一般现在时的被动语态表示“正在进行”。Yu are wanted n the phne.有人打电话找你。MP3 is becming mre and mre ppular.In ther wrds, it is lved by mre and mre peple.MP3越来越受欢迎，换句话说，它越来越受人们的喜爱。
完成句子①Our child ________________________ by his teacher.我们的孩子正由他的老师照顾着。②The pr ld man ____________________________ by the vlunteer.那位可怜的老人正由这名志愿者悉心照顾着。③Jack, cme here. Yu _____________ n the phne.杰克，过来，有人打电话找你。
is being lked after　
is being taken gd care f　
are wanted　
④The city _____________________________________ at the mment.这个城市目前正在遭受袭击。⑤The building _____________________________________________.这座建筑正在建设之中。
is under attack(is being attacked)　
is under cnstructin(is being cnstructed)　
专项练习Ⅰ.用所给词的适当形式填空1．They are living with their parents fr the mment because their wn huse ___________________(rebuild)．2．Many interesting experiments ____________________(carry) ut these days.3．These children ___________________(lk) after by an ld man nw.4．Wait a minute. The dishes fr the dinner ______________(ck) in the kitchen.
is being rebuilt　
are being carried　
are being lked　
5．He ____________________(punish) fr his mistakes at the mment.6．The sprts meeting ________________(hld) in ur schl nw.7．S many things ________________(d) here t prevent air pllutin.8．A bridge _________________(build) in the distance and its cnstructin ___________________(finish) in a year.
is being punished　
are being dne　
is being built　
will be finished　
Ⅱ.把下面的句子改成被动语态1．The gvernment is making great effrts t imprve the living cnditins f peple.→Great effrts _________________ t imprve the living cnditins f peple by the gvernment.2．The farmers are cutting dwn the jungles in this area s quickly that the wild animals may lse their hmes in the near future.→The jungles in this area _____________________ by the farmers s quickly that the wild animals may lse their hmes in the near future.
are being made　
are being cut dwn　
3．Peple are hunting t many animals these years in sme places.→T many animals ___________________ by peple these years in sme places.4．The teacher is crrecting the papers in her ffice.→The papers ______________________ by the teacher in her ffice.5．Our headmaster is preparing a speech nw.→A speech ____________________ by ur headmaster nw.6．The family are building a new huse ver there.→A new huse _________________ by the family ver there.
are being hunted　
are being crrected　
is being prepared　
7．The dctrs are perating n his left leg.→His left leg _______________________ by the dctrs.8．The farmers are harvesting crps in the field with their faces cvered with sweat.→The crps in the field ______________________ by the farmers with their faces cvered with sweat.
is being perated n　
are being harvested　
9．They are discussing whether they will g fr a picnic tmrrw.→Whether they will g fr a picnic tmrrw _____________________ by them.10．The gvernment is prtecting the tigers in the newly－built reserve.→The tigers ______________________ in the newly－built reserve by the gvernment.
is being discussed　
Ⅲ.语法主题应用Dear Sir r Madam，I’m writing t give sme suggestins t prtect the wildlife living in and arund ur city. As we knw, many species f wildlife are in danger f extinctin. This is because the envirnment that they are living in 1．_____________________(正在被毁坏) greatly.With the develpment f cities, water and air 2．_________________ _______(正在被严重污染). Their living areas are becming smaller and smaller.
is being destryed　
are being seriusly plluted　
They nt nly have little t eat, but als 3．___________________(正在被猎杀) by human beings. These species f wildlife are imprtant part f ur life. Althugh measures 4．__________________(正在被采取) t prtect them frm being hurt, much mre is needed. Firstly, mre laws must be made t stp peple frm cutting dwn trees. Secndly, mre reserves shuld be set up s that they can live safely.I hpe my suggestins are helpful.Yurs sincerely，Li Hua
are being taken