（新教材）2019-2020学年人教版英语必修第三册课件：UNIT 2 PERIOD Ⅲ　DISCOVERING USEFUL STRUCTURES .ppt

1、人教版英语必修第三册返回导航下页上页 Period Discovering Useful Structures人教版英语必修第三册返回导航下页上页语法 专项突破人教版英语必修第三册返回导航下页上页 动词的ing形式作宾语补足语和状语 诵读下列句子并写出加黑部分的句子成分 1(教材P17)The new Peoples Republic of China saw Dr Lin Qiaozhi playing a key role.2He saw her working in the garden.3I heard a bell ringing.4I could feel the wind blo

2、wing on my face.现在分词作宾补现在分词作宾补现在分词作宾补现在分词作宾补人教版英语必修第三册返回导航下页上页 5(教材P17)Though Lin Qiaozhi never married,she was known as the“mother of ten thousand babies”，having delivered over 50,000 babies in her lifetime.6 He suddenly appeared in class one day,wearing sunglasses.7Judging from his expression,he d

3、oesnt know the news.8Speaking in the public,he will surely be very cheerful.现在分词作状语现在分词作状语现在分词作状语现在分词作状语人教版英语必修第三册返回导航下页上页 1动词ing形式作宾补(1)动词ing形式作宾语补足语常放在宾语后面，表示一个正在进行的主动性的动作，强调一个过程或一种状态。现在分词作宾语补足语时，宾语与宾语补足语之间在逻辑上是主谓关系。When we returned,we found a stranger standing in front of the house.我们回来时，发现一个陌生人站

4、在房子前面。人教版英语必修第三册返回导航下页上页(2)当主句转换为被动结构时，原来作宾语补足语的动词ing形式便转换为主语补足语。They found the film very exciting.The film is found veryexciting.他们觉得这部电影很精彩。(3)能用ing形式作宾语补足语的几类动词：表示感觉和心理状态的感官动词，常见的有see,hear,feel,smell,find,notice,observe,look at,listen to等。I felt somebody standing behind me.我觉得有人站在我后面。人教版英语必修第三册返回

5、导航下页上页 表示指使意义的使役动词，常见的有have,set,keep,get,catch,leave等。We kept the fire burning all night long.我们让火整夜燃烧着。I wont have you running about in the room.我不允许你在房间里跑来跑去。(4)see,hear,feel,watch等动词之后用ing形式和动词不定式作宾语补足语的区别：We heard the telephone ring.我们听到电话铃响了。We heard the telephone ringing.我们听到电话铃在响。前者表示(或强调)动作的

6、全过程，后者表示动作正在进行。人教版英语必修第三册返回导航下页上页 2动词ing形式作状语 动词ing形式可以作状语，在句中表示时间、原因、结果、条件、让步、行为方式或伴随情况等。动词ing形式作时间、原因、条件、让步状语时多位于句首；作结果、伴随状语时常位于句末。现在分词作状语时，分词表示的动作是由句子主语执行的，它们之间是主谓关系。若分词所表示的动作与谓语所表示的动作同时发生，则用doing；如果现在分词所表示的动作发生在谓语所表示的动作之前，强调先后顺序，则用having done。人教版英语必修第三册返回导航下页上页(1)表示时间，相当于一个时间状语从句。Having made ful

7、l preparations,we are ready for the examination.(After we have made full preparations,we are ready for the examination.)我们已经作好了充分准备，现在可以应考了。(2)表示原因，相当于一个原因状语从句。Being ill,he didnt go to school yesterday.(Since he was ill,he didnt go to school yesterday.)由于生病，他昨天没去上学。人教版英语必修第三册返回导航下页上页(3)表示结果，相当于一个并列谓

8、语。His father died,leaving him a lot of money.(His father died and left him a lot of money.)他父亲死了，留给他许多钱。(4)表示条件，相当于一个条件状语从句。Working hard at your lessons,you will succeed.(If you work hard at your lessons，you will succeed.)如果你努力学习，就一定能成功。人教版英语必修第三册返回导航下页上页(5)表示让步，相当于一个让步状语从句。Knowing all this,they mad

9、e me pay for the damage.(Although they knew all this,they made me pay for the damage.)尽管知道了一切情况，他们还是要我赔偿损失。(6)表示行为方式、伴随情况或补充说明，相当于一个并列结构。He lay on the grass,staring at the sky for a long time.(He lay on the grass and stared at the sky for a long time.)他躺在草地上，长时间地望着天空。人教版英语必修第三册返回导航下页上页.单句语法填空 1All o

10、f us watched the hunter _(bring)down the dangerous bear.2When he woke up,he found himself _(lie)in hospital.3The missing girl was last found _(have)a dinner in that restaurant.4_(see)from the top of the hill,I found the buildings smaller.5A man rushed into the office,_(hold)some papers in his hands.

11、6_(work)for a long time,they felt so hungry and tired.bringlyinghavingSeeingholdingHaving worked人教版英语必修第三册返回导航下页上页.语法填空Each year 1._(thousand)of tourists visit the polar regions of the Arctic and Antarctica.But the increasing number of people travelling to the ends of the Earth can have 2._ negative

12、 effect on fragile ecosystems.Should tourists 3._(allow)to visit polar regions?人教版英语必修第三册返回导航下页上页 About 40,000 tourists visit Antarctica each year.More than five million travel to the Arctic and subArctic.Transporting tourists to the regions 4._ (increase)ship and airplane traffic,adding to the risk

13、 of pollution,oil spoils,and other 5._(environment)damage.Because the places where wildlife is accessible 6._(be)few in number,tourist traffic can become concentrated in specific areas,7._(put)Arctic vegetation at risk.人教版英语必修第三册返回导航下页上页 Others say that access 8._ these very special parts of the wor

14、ld should not be restricted to only researchers and scientists.Polar tourism allows people to develop deep 9._(person)connections with polar regions.“Those 10._ travel to the Arctic or Antarctica often become cheerleaders for supporting those places.”Jim Sano,vice president for travel and conservati

15、on at World Wildlife Fund,told TFK.语篇解读 越来越多的人喜欢去极地旅游，而这对南、北极的生态环境产生了很大影响。到底该不该去极地旅游呢？人教版英语必修第三册返回导航下页上页 1解析：考查固定短语。thousands of“成千上万的”。答案：thousands 2解析：考查冠词。have a(n).effect on“对有影响”，negative的发音以辅音音素开头，故用不定冠词a。答案：a 3解析：考查动词的语态。allow sb.to do sth.“允许某人做某事”，句中sb.提前，作了主语，因此此处用被动语态。答案：be allowed人教版英语必修

16、第三册返回导航下页上页 4解析：考查主谓一致。动名词短语作主语时谓语动词用单数形式。答案：increases 5解析：考查词性转换。修饰名词应用形容词形式。答案：environmental 6解析：考查动词时态和主谓一致。此处叙述的是客观情况，用一般现在时，主语为places，故应用are。答案：are人教版英语必修第三册返回导航下页上页 7解析：考查非谓语动词。此处为现在分词短语作结果状语。答案：putting 8解析：考查介词。access to为固定短语，意为“接近，有权使用”。答案：to 9解析：考查词性转换。修饰名词应用形容词形式。答案：personal 10解析：考查定语从句。先行词为those，在定语从句中关系代词作主语，故用who。答案：who