Unit 5 Discovering Useful Structures 学案--人教版（2019）高中英语必修第二册.docx

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1、B2 Unit 5 Discovering Useful Structures学案Discussion: 说出过去分词在句中充当的成分.1.This will result in a smaller number of fish left for us to eat in the future.2. We are meant to be. 3. I tried to make myself understood.4. I walk these streets famished.5. And dont be shocked when your history book mentions me.U

2、nderline the difference in verb forms:划出不同的动词姓氏.Report 1Report 21The awesome performance was given last week and was a great relief to all of you.Given last week, the awesome performance was a great relief to all of you.2Almost all of the classes of the 10th grade were attracted by the event and had

3、 practiced hard.Attracted by the event, almost all of the classes of the 10th grade had practiced hard.3When each performer was totally focused on the performance, he/she contributed a lot to the excellent and brilliant show.Totally focused on the performance, each performer contributed a lot to the

4、 excellent and brilliant show.4Because the audience were amused by the performance, they couldnt help cheering when each show finished.Amused by the performance, the audience couldnt help cheering when each show finished.Find out the rule of grammarUse only 4 symbols to show the sentence forms:S(主语)

5、; PP(过去分词); V(谓语动词); C(连词)Report 1Report 21The awesome performance was given last week and was a great relief to all of you.Given last week, the awesome performance was a great relief to all of you.2Almost all of the classes of the 10th grade were attracted by the event and had practiced hard.Attrac

6、ted by the event, almost all of the classes of the 10th grade had practiced hard.3When each performer was totally focused on the performance, he/she contributed a lot to the excellent and brilliant show.Totally focused on the performance, each performer contributed a lot to the excellent and brillia

7、nt show.4Because the audience were amused by the performance, they couldnt help cheering.Amused by the performance, the audience couldnt help cheering.Rule：1. + ; , + ; 2. + + - + ; , + 。过去分词作表语：1）观察下列句子并总结规律：1.She was moved by the moving speech.2.She seems surprised at the news.3.They looked fright

8、ened to hear the frightening sound.4.The door is closed.过去分词可置于 后作 语，用来表示主语的性质、特征或 。其前的系动词包括be动词、感官动词get, feel, remain, seem, look, become等多种形式。2）训练：1. The plants that they found there were (astonish)2. I was (astonish) to learn that his long lost child had been found.3. Shehada (worry)lookonherface

9、becauseshe failedthe exam.4.Helooked (interest)intheideaIputforward.5. The mother went to visit Einstein. (puzzle)6. Thereisnothing_(leave)todobutwaitformyparentstocomehere.7.Allhisfansare_(inspire) byLi Jianshumorin Voice of China.8. Be brave. You look like a _ bird (frighten)9. The fierce lion loo

10、ks _ (frighten). Keep away from its cage or it will attack you.过去分词作状语1.过去分词作时间状语过去分词作时间状语时，相当于时间状语从句。可在过去分词前加上连词“when, while, until”等，使其时间意义更明确。When water is heated, water turns into steam. , water turns into steam.2.过去分词作原因状语过去分词作原因状语时，可转换为由since, because或as引导的原因状语从句，这类状语多放在句子的前半部分。Because he was

11、exhausted, he fell fast asleep. , he fell fast asleep.3.过去分词作条件状语过去分词作条件状语时，可转换为if, once或unless等引导的条件状语从句。If I am given a time machine , I will pay a visit to the future. , I will pay a visit to the future.4.过去分词作让步状语过去分词作让步状语时，相当于一个以though/although引导的让步状语从句。Although he was laughed at by others, he

12、still smiles at life. , he still smiles at life.5.过去分词作方式/伴随状语过去分词作方式或伴随状语时，通常不能转换为状语从句，但可用并列分句代替。The girl left, and she was followed by a little dog.The girl left, .Summary:动词过去分词短语可在句中充当_,_,_，_,_和_等状语。重难点辨析：分词短语的逻辑主语必须跟_的主语保持一致。1._ from the hill, you will find thecitylookslikeabiggarden. 2._from t

13、he hill, thecitylooks likeabiggarden. 如果主句的主语和分词是主动关系, 用_，主句的主语和分词是被动关系，用_。独立主格结构 （作状语）作业一做完，孩子们就出去了。 _finished, children went out.=When _, children went out._ 为逻辑主语，_为逻辑谓语。若分词主语与句中主语不一致,则可以用其他方法来修正:给分词添加自己的主语,构成独立主格结构。改为相应的状语从句来表达。用with复合结构。有些过去分词短语作状语时，仅表完成的状态，不表被动意义： 等。含过去分词状语的句子的特点： 作状语的过去分词短语常相

14、当于状语从句。 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。 过去分词短语作状语所表达的状语类别，要根据整个句子的意思来推断。分词作状语答题记忆口诀： 分词作状语，主语是问题。 逗号前后两动作，共用一主语。 主语找出后，再来判关系。 。 千万要牢记。练习：1. _(raise) in the poorest area of Glasgow, he had a long, hard road to becoming a football star.2. Children, when _ (accompany) by their parents, are allowed

15、 to enter the stadium.3. _(found) in the early 20th century, the school keeps on inspiring childrens love of art.4. _(translate) into English, the sentence was found to have an entirely different word order.5. (If)_ (give) another chance, I will do a better job.6. _ (look) at from that point of view, his decision is easier to under- stand7. _ (view) from the road the wall liked too high to climb.8. _(describe) as an enormous round plate, it spins slowly in space to imitate the pull of the earths gravity.学科网（北京）股份有限公司