（新教材）人教版（2019）高中英语必修第二册UNIT 2 Period 3ppt课件.ppt

1、Unit 2Unit 2WILDLIFE PROTECTIONWILDLIFE PROTECTION Period ThreeDiscovering Useful Structures & Listening and Talking 课前自主预习课前自主预习 1watch over_ 2be covered with _ 3in order to _ 4clean up_ 5take measures to do sth._ 看守；监视 被覆盖 为了 清扫干净 采取措施做某事 6be worried about_ 7be used for _ 8put out_ 9due to _ 担心 被用

2、来 扑灭 由于 1_(据报道) living spaces for wildlife are reduced due to the cutting of trees. 2Maybe I should do something _ (去照顾他们) 【答案】1.It is reported that2.to take care of them 课堂新知讲练课堂新知讲练 1reduce vt.减少 (P18)It is reported that living spaces for wildlife are being reduced due to the cutting of trees. 【翻译

3、】据报道，由于砍伐树木，野生动物的生存空间正在减 少。 【用法详解】 【归纳拓展】 (1)reduction n减少 (2)同decrease，decline，shrink v减少 (3)反increase v增加；增长 针对练习 完成句子 (1)Costs have _ _ _ _ 20% over the past year. 过去一年，各项费用已经减少了20%。 (2)The skirt _ _ _ 10 in the sale. 在大减价期间，这条裙子减价到10英镑。 【答案】(1)have been reduced by(2)was reduced to 单句语法填空 (3)Ther

4、e has been some _(reduce) in unemployment. 【答案】(3)reduction 2neighbourhood n临近的地方；街区 (P18)What do you know is being done in your neighbourhood to protect animals and plants? 【翻译】你知道你邻近的地方正在做什么来保护动植物吗？ 【用法详解】 【归纳拓展】 (1)neighbour n邻居 (2)neighbouring adj.附近的 针对练习 单句语法填空 (1)We grew up _ the same neighbo

5、urhood. (2)Weve had a lot of support from all our friends and _ (neighbour) (3)Our factory has frequent contacts with the _ (neighbour) villages. 【答案】(1)in(2)neighbours(3)neighbouring 3due to 由于；因为 (P18)It is reported that living spaces for wildlife are being reduced due to the cutting of trees. 【翻译

6、】据报道，由于砍伐树木，野生动物的生存空间正在减 少。 (1)due 作形容词，还可作“预期的”讲，常构成搭配be due to do sth. “预定做某事”。 (2)due date 预产期；(会计)到期日 【用法详解】 【归纳拓展】 The train is due to leave at 8 oclock. 火车定于8点钟开出。 The train had stopped due to a mechanical problem. 火车因为机械故障停了下来。 针对练习 单句语法填空 (1)He was out of work due _ a physical injury. (2)The

7、 plane is due _(take) off in half an hour. (3)The sports meeting was put off because _ the terrible weather. 【答案】(1)to(2)to take(3)of 4search for 搜索；查找 (P19)They got up early _ search for wild birds. 【翻译】他们起得很早_为了寻找野鸟。 (1)search sp.for sb./sth. 搜查某地寻找某人/某物 (2)search sb. 搜某人的身 (3)in search of 寻找 【用法详

8、解】 I searched my bag for my keys. 我在包里找钥匙。 They were searching for the lost child. 他们在寻找那个丢失的孩子。 I searcheWe came here again in search of my wallet. 我们再次来到这里是为了找我钱包的。 针对练习 单句语法填空 (1)He has gone to a big city _ search of a better job. (2)The police were searching _ the thief then. 完成句子 (3)The young w

9、oman drove around the town _ _ _(寻找) a good hotel. 【答案】(1)in(2)for(3)in search of 突突 破破 语语 法法 观察领悟 【例句观察】 (1)Is the bridge being repaired now? (2)What is being discussed now? (3)The flowers are not being watered at this moment. (4)Our children are being educated to be green in everything they do. (5

10、)It is reported that a new house is being built at present in the disaster area. (6)Are the houses being decorated now? (7)Is the baby being taken care of by her aunt? 【我的领悟】 1现在进行时的被动语态肯定形式为： _。如句(4) 和句(5)。 2现在进行时的被动语态否定形式为： _。如句(3)。 3现在进行时的被动语态的一般疑问句式为：_。如 句(1)，句(6)和句(7)。 4现在进行时的被动语态的特殊疑问句式为：_。如 句

11、(2)。 答案： 1主语am/is/are being done. 2主语am/is/are not being done. 3Am/Is/Are主语being done? 4疑问词am/is/are主语being done? 现在进行时的被动语态 一、构成 形式结构 肯定式主语am/is/arebeing done. 否定式主语am/is/are notbeing done. 一般疑问式Am/Is/Are主语being done？ 特殊疑问式疑问词am/is/are主语being done？ Wait a minute, please.I am being examined by the d

12、octor. 请稍等。我正在接受医生的检查。 The plan is not being carried out well. 这个计划进展得不顺利。 What is being talked about by the students? 学生们在谈论什么？ Is the classroom being cleaned now? 教室此刻在被打扫吗？ 二、用法 1表示说话时正在进行的被动动作。 At present a new home is being built for pandas. 目前正在为熊猫建一个新家。 2表示现阶段正在进行的被动动作，说话时不一定在进行。 A new railwa

13、y station is being constructed. 一个新的火车站正在建设中。 3表示一种经常性的被动行为，常与always，constantly， frequently等表示频度的副词连用，带有赞赏或厌恶等感情色 彩。 I feel very surprised that the window of our classroom is frequently being broken. 我感到非常吃惊的是，我们教室的那扇窗户经常被打破。 4表示按计划或安排将要发生的被动动作(仅限于少数及物动 词)。 A popular song is being sung next. 下面将唱一首流

14、行歌曲。 三、注意事项 1一些表示状态、心理活动、拥有、存在等的动词，如 have， want，need，love，realize等，一般不用于进行时，因而也 没有进行时的被动语态，而常用一般现在时的被动语态表示 此刻或目前主语正承受谓语动词表示的动作。 玛丽，过来，有你的电话。 Mary, come here.Youre being wanted on the phone.(错误) Mary, come here.Youre wanted on the phone.(正确) 2少数动词用于现在进行时态，用主动形式表示被动含义， 如 print，cook, fry，hang等。 These m

15、agazines are printing. 这些杂志正在印刷中。 3.“bein/on/under名词”常含被动意义，可代替现在进行 时的被动语态。 The castle is under attack (being attacked) at the moment. 目前，那座城堡正受到进攻。 4因为被动语态的基本结构为be done，不少学生将现在进行 时的被动语态结构“am/is/arebeing done”误写成一般现在 时的被动语态结构“am/is/aredone”。例如： 瞧，这条道路正在建设。 Look! The road is built.(错误) Look! The road

16、 is being built.(正确) 晚宴正由克里斯蒂娜准备着。 The dinner is prepared by Christina.(错误) The dinner is being prepared by Christina.(正确) 四、句型转换 现在进行时的被动语态与现在分词的被动式being done均可表 示正在进行的被动动作，因此它们之间可以相互转换。 我发现国旗正在升起。 I find the national flag is being raised. I find the national flag being raised.(being raised作宾语补足 语)

17、 非谓语动词的被动形式，表达不同时间的被动意义，作用也 不一样。 追踪练习 .单项选择 ()1.As you can see, at present there are some places _ in order to make the city more beautiful. Aare being rebuiltBrebuilt Cbeing rebuiltDrebuilding ()2.Look! A new library _ in the center. Ais being built Bis built Cis buildingDbuilding ()3.The main road

18、 _ so far. Ais widenedBhas been widened Cis being widenedDwas widened ()4.Lets go to the museum where many art works _ now. AexhibitingBexhibited Cto be exhibitedDare being exhibited ()5.I think the new film _ in the cinema next Monday will be a great success. Ato be shownBshown Chaving been shownDb

19、eing shown 【答案】1.C2.A3.B4.D5.A .同义句转换 1The highway is under construction. The highway _ _ _. 2These hightech products are on display these days. These hightech products _ _ _ these days. 3Please tell me something about the meeting being held now. Please tell me something about the meeting which _ _

20、_ now. 【答案】1.is being constructed 2are being displayed 3is being held 随堂知能小练随堂知能小练 .单句语法填空 1The suggestion _(discuss) at the meeting now. 2The ancient building whose roof was badly damaged in the rainstorm _(repair) now. 3The sports meeting _(hold) now in our school. 4The classroom _(decorate) with

21、balloons and flowers right now. 5These birds _(preserve) well here at the present time. 6It was so foggy that the driver had to reduce the speed _ 40 kilometers an hour. 7The car accident happened due _ the carelessness of the driver. 8_(neighbour) shopkeepers ran after the man and caught him. 9I re

22、turned to the office _ search of my keys. 10The _(reduce) of the population of the deer caught their attention. 【答案】1.is being discussed2.is being repaired 3is being held4.is being decorated 5are being preserved6.to7.to 8Neighbouring9.in10.reduction .单项选择 ()1.The church tower which _ will be open to

23、 tourists soon.The work is almost finished. Arestored Bto be restored Cis being restoredDbeing restored ()2.The title is very important.It tells you the main idea of the graph by stating what kind of information _. Ais being shownBto be shown Cshowing Dbeing shown ()3.The giant machine _ apart at th

24、e moment and it will be fixed up in the new workshop in the near future. AtakenBhas been taken Cbeing takenDis being taken ()4.But now that information _ and monitored in different ways. Ato be spread Bis being spread CspreadDspreading ()5.Daisy has found that a lot of antelopes _ and killed for the

25、 wool beneath their stomachs now. Ato be hunted Bare being hunted Chunting Dare hunting ()6.Since your bike is _ repair, you can use mine. AunderBon CwithDafter ()7.The computer is _ use by my roommate now. AunderBwith CinDafter ()8.Many interesting experiments _ out these days. AcarriedBcarrying Ct

26、o be carried Dare being carried ()9.Look! A snowman _ by the children in the yard now. Ais makingBis to be made Chas been makingDis being made ()10.He is always _ by the teacher. Abeing praised Bpraising Cpraised Dto be praised 【答案】1.C2.A3.D4.B5.B6.A7.C8.D9.D 10.A .完成句子 1The town was cut off from th

27、e rest of the world _ _(由于) heavy snow. 2The number of workers in this company has _ _ _(被减少到) 120. 3The new generation of computers, with artificial intelligence, _ _ _(正在被研发) and perfected now. 4Whats that noise? Oh, I forgot to tell you.The new machine _ _ _(正在被检测) 5I dont suppose the police know who did it. Well, surprisingly they do.A man has been arrested and _ _ _(正在被询问) now. 【答案】1.due to2.been reduced to 3are being developed4.is being tested 5is being questioned