（2021新人教版）高中英语必修第二册Unit 2 Wildlife protection Section Cppt课件.pptx

1、Unit 2 WILDLIFE PROTECTION Section C Discovering Useful Structures 核心词汇 词汇一 reduce vt. 减少 教材原句 It is reported that living spaces for wildlife are being reduced due to the cutting of trees. 据报道，由于砍伐树木，野生 动物的生存空间正在减少。 要点必记 be reduced to 减少到 be reduced by 减少了 reduce speed 减速 reduce costs 降低成本 reduce ex

2、penses 缩减费用 词语积累 reduction n. 减少 同decrease v. 减少 反increase v. 增加；增长 题组练领悟方法 单句语法填空 （1）词汇复现The number of endangered insects has been reduced 30%，and there are still 70% left. （2） It was so foggy that the driver had to reduce the speed 40 kilometres an hour. 单句写作 （3） What they earn _ _ _ _（减少了） 30% in

3、 the last three months. （4） The number of the workers in this company_ _ _ _ （已经减少到了）120. has been reduced to has been reduced by to by 词汇二 due to 由于；因为 要点必记 （ 1）due to“由于”，较正式用语， 常用 于官方通告和公开声明中， 可以直接作 表语。 （ 2）due 作形容词，还可作“预期的”讲， 常构成搭配be due to do sth. 。 辨析填空（due to/owing to/because of/thanks to） （1

4、） He was out of work a physical injury. （2） Most of the problems were human error. （3） your help，I got the position advertised in the newspaper. （4）2016北京卷The town was cut off from the rest of the world heavy snow. Thanks to/Owing to/Because of due to/owing to due to/owing to/because of due to/owing

5、 to/because of 词汇三 neighbourhood n. 邻近的地方；街区 教材原句 What do you know is being done in your neighbourhood to protect animals and plants? 你知 道你邻近的地方正在做什么来保护动植物吗？ 要点必记 in the same neighbourhood 在同一条街上 in the neighbourhood 在邻近地区 a poor/quiet/residential neighbourhood 贫困的街区/ 安静的街区/ 居民区 单句写作 （1） 我们是在同一条街上长大

6、的。 _ （2） 他叫得那么大声，整条街的人都能听到。 He shouted so loudly that could hear him. （3）词汇复现附近有一个野生动物栖息地，我们有时会去看望那些动物。 There is a wildlife habitat ，and we sometimes visit those animals. We grew up in the same neighbourhood. the whole neighbourhood in the neighbourhood 单元语法 要点一 现在进行时的被动语态 要点必记 一、构成 肯定式：主语 +am/is/ar

7、e+being done. 一般疑问式：Am/Is/Are+ 主语+being done? 否定式：主语 +am/is/are not+being done. 特殊疑问式：疑问词 +am/is/are+（主语 +） being done? 二、用法 （1）表示说话时正在进行的被动动作。 （ 2）表示现阶段正在进行的被动动作，说 话时不一定在进行。 （ 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。 （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）。 三、注意事项 （ 1）一些表示状态、

8、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.（） Mary，come here. Youre wanted on the phone.（） （ 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。 （ 3）“be+in/on/under+ 名词”常

9、含被动 意义，可代替现在进行时的被动语态。 （ 4）因为被动语态的基本结构为 be done，不少学生误将现在进行时的被动语态结构“am/is/are+being done”写成一般现在时的被动语态结构“am/is/ are+done”。 瞧，这条道路正在建设。 Look! The road is built.（） Look! The road is being built.（） 晚宴正由克里斯蒂娜准备着。 The dinner is prepared by Christina.（） The dinner is being prepared by Christina. （） 四、句型转换 现在

10、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。 单句语法填空 （1） Look! The baby （take）care of by her aunt. （2）词汇复现A new house （decorate）outside our school at present. （3） A new library （build） here. They hope to finish it next month. （4） Hi，Im Alice. Look at this photoa snowman （make）by me. （5）

11、At present a new home （build） for pandas. （6） Is the bridge （repair）now? （7） To our delight，many endangered species （protect） by the government now. （8 Many interesting experiments （carry）out these days. is being taken is being decorated is being built is being made is being built being repaired are

12、 being protected are being carried （9） Since your bike （repair），you can use mine. （10） Daisy has found that a lot of antelopes （hunt） and killed for the wool beneath their stomachs now. （11） The new generation of computers，with artificial intelligence， （ develop）and perfected now. （12）2017江苏卷He hurr

13、ied home，never once looking back to see if he （follow）. （13）I dont suppose the police know who did it. Well，surprisingly they do. A man has been arrested and （question）now. （14）Have you handed in your schoolwork yet? Yes，I have. I guess it （grade）now. （15）Whats that noise? Oh，I forgot to tell you. T

14、he new machine （test）. is being repaired are being hunted are being developed was being followed is being questioned is being graded is being tested 单句写作 （1） These birds （正在被保护） well here. （2） The sports meeting （正在被举办）in our school. （3） How many buildings （正在被修建） in the town? （4） The giant machine

15、（正在被拆卸）at the moment and it will be fixed up in the new workshop in the near future. （5） The classroom （正在被装饰）with balloons and flowers right now and the students are preparing for the New Year party. （1） are being protected （2） is being held （3） are being built （4） is being taken apart （5） is being

16、 decorated （6） It is reported that many a new house （ 正在被建造） at present in the disaster area. （7） He （总是受到表扬） by the teacher. （8） The window of our classroom （ 经常被打破）. （9） The sum these computers will cost us （ 正在计算）. （10）With the population increasing，more land （需要） is being built is always being p

17、raised is frequently being broken is being calculated is needed 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。 误区警示 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。 to be done：不定式的被动形式，表将来和被动 being done：现在分词的被动形式，表进行和被动 having been done：现在分词完成式的被动形式，表完成和被动 句型转换 （1） 请告诉我此刻正在举行的会议的有关情况。 Please tell

18、me something about the meeting being held now. =Please tell me something about the meeting . （2） 我发现国旗正在升起。 I find the national flag is being raised. =I find the national flag . （3） 电脑现在正在使用。 The computer is in use now. =The computer now. （4） 近来这些高科技产品正在展出。 These high-tech products are on display th

19、ese days. =These high-tech products these days which is being held now being raised is being used are being displayed （5） 此刻，那座城堡正遭到袭击。 The castle is under attack at the moment. =The castle at the moment. （6） 这条公路正在修建/ 建造。 The highway is under repair/construction. = The highway . （7） 这个建议正在会上讨论。 The suggestion is under discussion at the meeting. =The suggestion at the meeting. is being attacked is being repaired/ constructed is being discussed