Unit5Period 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 Structuresn By the end of this period,you will be able to1.master the usage of past participles serving as predicative.2.master the usage of past participles serving as adverbial.3.use past participles freely in their communication.Lead-inDescribe the following pictures.The boy is

2、 a_ in reading a book.The people are e_.The boy is s_.excitedabsorbedsurprisedPast participle serving as the predicative.Exploring the differencesObserve the following sentences and find out the differences between verb-ed and verb-ing as adjectives.3.Your performances are satisfying.4.I am satisfie

3、d with your performances.5.The cup is broken.现在分词作表语时，句子主语多是物，它表示给别人造成的感觉，表示主动意义；而过去分词作表语时，句子主语多是人，表示主语的感受，表示被动意义；句子主语是物时，表示主语所处的状态。PracticeTask 1 Linda is talking with his father.Use the correct form of the verb to fill in each blank.(1)tired(2)burned(3)bored(4)disappointing(5)pleased(6)challenging

4、(7)relaxedTask 2 Play a game每人说一个含有过去分词作表语的句子(看哪组说得又快又好)。(参考词汇：excited,frightened,puzzled,astonished,interested,pleased,delighted,disappointed,lost,satisfied,surprised,worried,tired,broken)The girl is frightened to see snakes.I am puzzled at the math problem.Most middle school students are intereste

5、d in reading English novels.I am delighted to hear from you.Tom felt disappointed to hear that his invitation was turned down.My mother is not worried about my study.Past participle serving as the adverbial Observe and learnLook at the following sentences and underline the past participles.In pairs,

6、discuss their functions.1.Born in the USA on 2 January 1970,Whitacre began studying music at the University of Nevada in 1988.2.Moved by this music,he said,“It was like seeing color for the first time.”3.Inspired,he asked his fans to make videos,which he then joined together into one performance.Tas

7、k 1 Observe the sentences again and figure out the relationship between the understood subject of the verb-ed and the subject of the main clause.1.Born in the USA on 2 January 1970,Whitacre began studying music at the University of Nevada in 1988.2.Moved by this music,he said,“It was like seeing col

8、or for the first time.”3.Inspired,he asked his fans to make videos,which he then joined together into one performance.A verb-ed form has an understood subject.The understood subject is usually the same as the subject of the main clause.The verb-ed form is passive in meaning.Task 2 Task 3 Observe the

9、 following sentences and think about what meaning the verb-ed phrases express.1.Asked why he was against cloning humans,the scientist explained that it might lead to disaster.2.Shocked by the article,the woman wrote a letter to the newspaper.3.Heated,the metal will expand.1.The verb-ed phrase“Asked

10、why”expresses“time”.It can be changed into an adverbial clause,“When he was asked why he was against cloning humans”.2.The verb-ed phrase“Shocked by”expresses“reason”.It can be changed into an adverbial clause.“Because she was shocked by the article”.3.The verb-ed phrase“Heated”expresses“condition”.

11、It can be changed into an adverbial clause.“If the metal is heated”.Task 4 Rewrite the following sentences using past participles as the adverbial and think about what are the differences between the original sentences and the rewritten ones.1.Henry was highly interested in music and began to write

12、original compositions when he was in high school.2.They were pleased with his music and songs and finally invited him to perform in the Silver Hall.3.Though he was affected by gradual blindness soon after the performance,Henry was still capable of writing compositions and he found that creating musi

13、c was a relief and cure for his illness.4.When he got absorbed in his world of music,he felt as if he could“see”the beauty of the world around him,like he had in his previous life.1.Highly interested in music,Henry began to write original compositions when he was in high school.2.Pleased with his mu

14、sic and songs,they finally invited him to perform in the Silver Hall.3.Though affected by gradual blindness soon after the performance,Henry was still capable of writing compositions and he found that creating music was a relief and cure for his illness.4.Absorbed in his world of music,he felt as if

15、 he could“see”the beauty of the world around him,like he had in his previous life.改写后的句子在表达上更为简洁和凝练，是一种较高级的语言组织方式，同时突出了句子的表达重心，在正式文体中使用较多。Task 5 Summary过去分词作状语的句子作状语的过去分词常常相当于一个状语从句过去分词的逻辑主语和句子主语一致过去分词与其逻辑主语之间是被动关系 Consolidation Complete the passage with the words in brackets in their correct forms.

16、Well-known as a successful band,the Impact members show quite a few striking qualities.They never ever give up.When _(question)by the media,they are not _(discourage)and practise even harder.They are improving themselves by attending several master training classes.They are united._(fill)with team spirit,they act as a whole,always aiming for glory.Filledquestioneddiscouraged1.Write 10 sentences using past participles serving as predicative and adverbial.2.Finish off the exercises on workbook“Using Structures 1-3”.