Unit4 Journey Across a Vast Land Discover Useful Structures 公开课导学案-高中英语人教版（2019）选择性必修第二册.docx

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1、Unit4: Journey Across a Vast LandPeriod3 Discovering Useful Structures（过去分词和现在分词作状语）一：看图片，在老师的引导说出一个含有状语从句的句子图片1： 图片2： 图片3：二：观察句子，得出结论：1. Listening to the music,I start to dance.2. Beaten by the sheep, Mr Wolf cried out loudly.3. Studying harder and harder,you will pass the exam.Summary:过去分词和现在分词在句中

2、都可充当_,表示时间,原因,条件,让步,方式或伴随等。三：What kind of clauses do you know?第1步：说出下列划线部分的句子属于什么状语从句1.When he was asked what had happened, he kept silent.2.Because Mr wolf was beaten by the sheep, he cried out loudly.3.If I am given a time machine, I will pay a visit to the future.4.Although he was left alone at h

3、ome, the little boy didnt feel afraid at all.5.The teacher entered the classroom, and he was followed by some students.第2步：找出两个句子的主语，再找出从句部分的谓语动词，后判断主语和谓语动词之间是什么关系，最后改写非谓语形式作状语。第3步：观察改写的句子，得结论1. Beaten by the sheep, Mr wolf cried out loudly.2. Asked what had happened, he kept silent3. Given a time m

4、achine, I will pay a visit to the future.4. Left alone at home, the little boy didnt feel afraid at all.5. The teacher entered the classroom, followed by some students.Summary:过去分词在句中作 。句子的逻辑主语和分词之间存在 关系。练习一：选择题Task2选择题：1._in a travel book,the large forest is a good place where we wanted to go.A.Fin

5、ding B.FindsC.To find D.Found2._from the TV, there are a lot of creatures in the forest.A.Seen B.SeeingC.Being seen D.Saw3._by the guide,we gave up our idea finally.A.Warns B.WarnedC.Being warned D.Having warned4._to go back to the hotel by the guide,we didnt have anyactivities to kill the time.A.As

6、ked B.Having askedC.To ask D.Asks四：What kind of clauses do you know?第1步：说出下列划线部分的句子属于什么状语从句1. When I was walking in the street ,I came across an old friend of mine. 2. As I thought he might be at home,I called him.3. If you head ahead,you will see a white house.4. Her mother died in 1990,and she lef

7、t her with her younger sister.5. Though he lacked money,he asked nobody for help.第2步：找出两个句子的主语，再找出从句部分的谓语动词，后判断主语和谓语动词之间是什么关系，最后改写非谓语形式作状语。第3步：观察改写的句子，得结论1. Walking in the street,I came across an old friend of mine.2. Thinking he might be at home,I called him.3. Heading ahead,you will see a white ho

8、use.4. Her mother died in 1990,leaving her with her younger sister.5. Lacking money,he didnt ask anybody for help.Summary:现在分词在句中作 。句子的逻辑主语和分词之间是 关系。练习二：用所给词的适当形式填空：1._(do)my homework at night,I found a little boy sittingthere.2._ (wonder)what had happened to him,I went towardshim.3._(be)afraid of a

9、 stranger,he ran away.4.I ran after him,_ (shout)Stop,stop.5._(try)my best,I could not catch up with him.五：Practices competition（练习赛）Task1:对错题1. Time,using correctly,is money in the bank.（）2. Found the course very difficult,she decided to move to a lower level.（）3. Unless invited to speak,you should

10、 remain silent at the conference.（）4. Heating, liquids can be changed into gases.（）5. Worried about his sons safety,he didnt sleep well.（）6.Used the book,I find it useful.（）Task2:根据语境，尽可能地用分词形式翻译下列划线句子。以前，1. 由于沉迷网络，Kent的成绩很差。 但是，2. 加入到我们班以后，他下定决心要努力学习 。昨天，3. 看到他站在教室外，正思考着什么。 4. 我问他发生什么事了，他回答在学习上遇到了一

11、些挑战。 他还说，5. 尽管还赶不上大家，但我不会灰心，我会继续保持前进的。 In the past,1. _,Kent got poor grades.However,2._. Yesterday,3._.4._,he replied that he was having some challenges with his studies. He added, 5._and I will keep going forward.六：Compare and summarize1.Beaten by the sheep, Mr Wolf cried out loudly.2.Asked what h

12、ad happened, he kept silent.3.Given a time machine, I will pay a visit to the future.4.Walking in the street,I came across an old friend of mine.5.Thinking he might be at home,I called him.6.Heading ahead, you will see a white house. .Summary:(1).如果句子的逻辑主语和分词之间存在被动关系，用 形式；(2)如果句子的逻辑主语和分词之间存在主动关系，用 形

13、式。七：Homework1.Go over what we have learnt in this class.2.Finish the grammar filling on your handout. After graduation,Li Dan found it very difficult to find a good job in Shanghai. At that time,she felt1._(disappoint). She had to return to her hometown.Born in a small village in Southwest China,she

14、 had no one to reply on.She stayed in her home and felt 2._(confuse) about her future all day long. Later,3._(encourage) by her classmates, Li Dan decided to start her own fruit-growing business. 4._(support) by the local government,Li Dan first bought a piece of land.5. _(work) hard over the last s

15、everal years, and6._(take) advantages of new technology and the Internet,Li Dan has expanded her business to include agritourism. Now,7._(watch) the vegetables and fruits in her field, Li Dan feels very proud of herself. With Chinas population 8._(expect) to continue rising in the coming years, the

16、government understands the importance of agriculture. It has taken measures to help graduates,because they can come up with better ways to grow crops and develop new,creative ways of farming9._(use) the Internet. It is not10._(surprise)that more new graduates are now yearning for life in the country,where they can fulfill personal goals and contribute to local communities.4学科网（北京）股份有限公司