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

这是一份高中英语人教版 (2019)必修 第二册Unit 2 Wildlife protection教学ppt课件，共33页。PPT课件主要包含了课前·基础认知，课堂·重难突破，随 堂 训 练，to ，reduction ，构成 ，选词填空 等内容，欢迎下载使用。

词汇认知重点单词1.　deer　 n. 鹿 2.kangar n.　袋鼠　 3.　insect　 n. 昆虫 4.　net　 n. 网　adj.净得的;纯的 5.　neighburhd　 n. 临近的地方;街区 词汇拓展reduce vt. 减少→　reductin　 n. 降低;减少 
重点短语1.due 　t　 由于;因为 2.right 　nw　 现在,目前 3.even 　wrse　 更为糟糕地 
语法图解现在进行时的被动语态
探究发现阅读下列句子,注意句中的画线部分1.The car is being cleaned. 2.The windw f her rm is ften being brken. 3.Sme animals are nt being prtected well enugh. 4.Is this bridge being built nw? 5.Hw many trees are being cut dwn right nw? 
现在进行时的被动语态由be+　being　+及物动词-ed形式构成,助动词be有人称和数的变化,即am,is,are。现在进行时与ften等频率副词连用时,不表示动作正在进行。 
词汇精讲【教材原文】It is reprted that living spaces fr wildlife are (reduced/being reduced) due t the cutting f trees.(page 18)据报道,野生动物的生存空间因为砍伐树木而减少了/正在减少。
考点一reduce vt.减少;缩小(尺寸、数量、价格等)reduce sth 某物从……减少/降低到……reduce sth by... 把某物……减少/降低了…… 将……概括为(或简化为)……reductin n.减少;缩小;降低
语境领悟(1)The number f emplyees was reduced frm 40 t 25.雇员人数从40 减少到了25。(2)Csts have been reduced by 20% ver the past year.过去一年,成本支出已经减少了20%。
考点二due adj. 由于;因为;到期;预期due t 由于;因为be due t d sth 预定/计划(做)某事be due t sb 应支付/给予/归于某人be due fr sth 应用某物;应得到某物
语境领悟(1)We paid due attentin t the prblem.我们对此问题给予了应有的注意。(2)The bill will be due next Mnday.这张账单下星期一到期。(3)The train is due t leave fr Shanghai at 8 'clck.这趟列车定于8点出发去上海。(4)His success was due t the fact that he had been wrking hard.他的成功是由于他一直勤奋地工作。
学以致用单句语法填空(1)The price f the shirt was reduced frm $50 __________ $35 in the sale. (2)We can reduce the prblem ____________tw main issues. (3)There is a slight ____________(reduce) in csts,s it is pssible that we'll make mre prfits this year. 
完成句子(4)下一辆公共汽车将在半个小时以后到达。The next bus _______ _______ ________ ________ in half an hur. (5)他们因为糟糕的天气来晚了。They came late ______ ______the bad weather. 
is due t arrive
due t
语法精析现在进行时的被动语态一、用法1.现在进行时的被动语态表示此刻正在进行的被动动作,强调主语是动作的承受者。The prject is being discussed at the meeting.会议正在讨论这个项目。
2.现在进行时的被动语态也可表示目前这一阶段正在进行的被动动作。Many nature reserves are being set up these days.如今有许多自然保护区正在建设中。3.现在进行时的被动语态表示一种习惯的被动行为,常与always,ften,cnstantly,frequently等表示频度的副词连用,常有赞赏或讨厌等感情色彩。The same questins are always being asked.总有人问同样的问题。
三、注意事项1.不可遗漏being现在进行时的被动语态中,be为第一助动词,being为第二助动词,缺一不可,且位置不可互换。此结构若缺少being,则就成为一般现在时的被动语态或系表结构。试比较:The reprt is being written by a student.报告正在由一名学生写着。(现在进行时的被动语态)The reprt is written by a student.这个报告是由一名学生写的。(一般现在时的被动语态)
2.不可遗漏介词take care f,lk after,talk abut,think f等动词短语用于现在进行时的被动语态时,其中的介词不可省略。Lk!The children are being taken care f by their aunt.瞧!孩子们正由他们的姨妈照看着。3.没有现在进行时的被动语态的动词非延续性动词、表示存在意义、所属关系、静态特征的动词以及系动词不用于现在进行时的被动语态。The bk belngs t him.这本书是他的。
4.“be(am/is/are)+under/in+n.” 结构有时可相当于现在进行时的被动语态。The bridge is in use.=The bridge is being used.这座桥正在使用。
即学即练单句语法填空(1)My washing machine ________________ (repair) this week,s I have t wash my clthes by hand. (2)—What's that nise?—Oh,I frgt t tell yu.The new machine _____________ (test). (3)It is reprted that many a new huse ________________ (build) at present in the disaster area. 
is being repaired
is being tested
is being built
(4)They are living with their parents fr the mment because their wn huse ________________(rebuild). (5)After schl we went t the reading rm t d sme reading,nly t be tld that it ________________(decrate). 
is being rebuilt
was being decrated
句型转换(用现在进行时的被动语态)(6)The teacher is grading the students' schlwrk nw.→The students' schlwrk _____ ______ _______nw. (7)The plice have arrested a yung man and they are questining him nw.→A yung man has been arrested and ___ _____ _______ nw.(8)The water in the lake is under pllutin.→The water in the lake _______ ________ _________. 
is being graded
is being questined
is being plluted
一、单句语法填空1.Listen!His speech ________ ________ ________(bradcast) n the radi. 答案:is being bradcast2.His huse ________ ________ ________ (paint) these days. 答案:is being painted3.A lt f buildings ________ ________ ________(set) up,and peple will mve in next year.答案:are being set
4.Since the lift is ____________repair,let's walk upstairs. 答案:under5.This species ________ _______(die) ut,s we shuld d smething t prevent this happening befre things becme wrse. 答案:is dying
reduce　due t　kangar　neighburhd　net　insect
1.____________ are native t Australia. 答案:Kangars2.They had t put ff the match ____________the heavy rain. 答案:due t3.Peple living in the ____________all supprt the plan. 答案:neighburhd
4.The fishing ____________are still being used t catch fish. 答案:nets5.The ppulatin f the African elephants is ____________by 7%.答案:reduced6.Of all the ____________,bees use a special cmmunicatin system. 答案:insects
三、句型转换1.The cmpany is under attack fr its decisin t clse the factry.→The cmpany ________ ________ ________ fr its decisin t clse the factry. 答案:is being attacked　2.The huse which is being built nw will be used fr ur library.→The huse ________ ________ nw will be used fr ur library. 答案:being built　
3.In the city,it is cmmn t see many pets that are left behind by their wners.→In the city,it is cmmn t see many pets ______ ______ by their wners. 答案:left behind　4.I am writing the alarming reprt and it will be finished sn.→The alarming reprt ________ ________ ________ and will be finished sn. 答案:is being written