Unit 4 Discovering Useful Structures （ppt课件）-2022新人教版（2019）《高中英语》必修第二册.pptx

1、 Discovering Useful Structures 含义：含义：过去分词一般表示完成的和被动的动作。形式：形式：done 变化规则变化规则：规则动词的过去分词由动词原形加-ed构成，不规则动词的过去分词没有统一的构成规则。举例：举例：an _ player 一个受伤的球员 a _ vase 一个破花瓶过去分词Lead-in Look at the sentences and underline the past participles.injuredbroken Look at the sentences and underline the past participles.(1)M

2、ost people just use the shortened“the United Kingdom”or“the UK”.(2)They use the sam known as the Union Jack,.(3)They had built all around England.u 三个例句中分词或分词短语的句子成分是什么？作定语作定语作定语和宾语补足语作定语作定语作宾语补足语作宾语补足语(1)Most people just use the shortened name(2)They use the same flag,known as the Union Jack,(3)The

3、y had castles built all around England.过去分词作定语和宾语补足语的用法presentationSummarize：shortened在句1中位置在名词_,known as在句2中位置在名词_。1.2句中分词和分词短语都用来修饰_，做定语；句子3 名词castles 是作had的宾语，所以built是对名词castles进行补充说明，做_（简称宾补），短语_过去分词作定语的位置一般情况下，单个过去分词作前置定语，即放在所修饰词之前。Most people just use the shortened name过去分词短语作定语时往往作后置定语，即放在所修饰

4、词之后。They use the same flag,known as the Union Jack,presentationPast Participles as the Attribute(1)Past Participles as the Attribute(2)tired visitorsa well-organised trip beautifully dressed starsvisitors _ of the long wait/a trip _ well by my workplace/stars _ beautifully at the event/tiredorganise

5、ddressed过去分词作定语和宾语补足语的用法后置定语：过去分词短语作定语时位于被修饰词之后前置定语：单个的过去分词作定语一般前置u 观察过去分词作定语在位置上的不同，可以得出什么结论？常见的过去分词作宾语补足语的情况1过去分词用在使役动词使役动词have/get和和make的后面作宾语补足语。“have/get sth done”表示“让别人做某事”。He wants to have/get his eyes examined tomorrow他明天想去检查眼睛。常见的过去分词作宾语补足语的情况2过去分词用在表状态的动词表状态的动词keep,leave等词的后面作宾语补足语。He pass

6、ed away,leaving his works unfinished他去世了，留下他的著作还未完成。常见的过去分词作宾语补足语的情况3感官动词感官动词see,hear,notice,observe,watch,feel,find等后，可用过去分词作宾语补足语。When we saw the road blocked with snow,we decided to 当我们看到道路被雪封住后，我们决定The next morning people found the world changed第二天早上，人们发现外面的世界变了样。常见的过去分词作宾语补足语的情况4表示“意愿；命令意愿；命令”的

7、动词，如的动词，如like,want,wish,expect,order等可用过去分词作宾语补足语。He ordered the work finished this week他要求在这周完成这项工作。practiceRead the sentences and underline the-ed form as the object complement.1 Judy and I had our car parked in an underground car park near Trafalgar Square,where we could get our car battery charg

8、ed.2 When we finally reached the service desk to ask for audio guides,we heard it announced that there were no audio guides left.3 We found ourselves very surprised by the large number of visitors and the amount of noise at the entrance of the National Gallery.Read the sentences and underline the-ed

9、 form as the object complement.4 Judy had her eyes fixed on Van Goghs Sunflowers.It was hard to approach the painting.as there were so many people around.5 She had a copy of the painting boxed to ensure that it was delivered safely.practice意义形式语态时态过去分词被动完成现在分词主动进行3过去分词与现在分词作定语的区别As we all know,China

10、 is a developing country众所周知，中国是一个发展中国家。The visitor is from a developed country这位游客来自一个发达国家。Summary 过去分词与它相关联的名词时是被动关系 单个分词作名词的定语时，其位置在名词前；分词以短语形式出现则其位置在名词后 分词及分词短语作定语：as the attribute 分词短语作宾语补足语：as the object complement 后置定语：过去分词短语作定语时位于被修饰词之后 前置定语：单个的过去分词作定语一般前置 当过去分词是复合形式，一般放在被修饰词前面作前置定语 当被修饰词是不定

11、代词时，过去分词放在不定代词后面，作后置定语4 Rewrite the sentences with past participles as the attribute.(1)Loch Ness was surrounded by beautiful natural landscape,which made it look amazing._(2)Carl and his friends stayed with a generous family who offered them bread with butter and made._Loch Ness surrounded by beaut

12、iful natural landscape looks amazing.Carl and his friends stayed with a generous family who offered them homemade bread with butter and honey.production(3)The familys ancestors once attended to soldiers who were wounded in the First World War._(4)The young people were attracted by the legend of Loch

13、 Ness.They watched over the lake with their cameras and binoculars,which were positioned on the hill._The family s ancestors once attended to wounded soldiers in the First World War.The young people attracted by the legend of Loch Ness watched over the lake with their cameras and binoculars positioned on the hill.4 Rewrite the sentences with past participles as the attribute.productionThank you！