Book4 Unit4 Grammar
The Present Participles as Adverbials现在分词作状语
教材分析：本课是人教版必修四第四单元语法课，现在分词充当句子成分是本课的语法重点，本单元阅读材料中出现了大量现在分词作状语的用法，高考也常有涉及。因此，本课围绕课时重点进行了四个方面的分析，一是现在分词的形式，二是现在分词所充当的状语类型，三是现在分词作状语和状语从句的转换，四是现在分词与主句主语的一致性。为了实现教学目标，我在教学过程中主要采取了观察归纳法、示范法、小组合作引导学生认识问题、分析问题、解决问题。为了巩固教学成果，我参考当前的常考题型如单句改错、短文填空设置了与教学内容紧密相关的作业题，希望能够达到巩固提升的效果。
学情分析：本班学生为高一年级实验班学生，学习基础总体较好，但因为还处于高中初级阶段，所以教学内容应当居中，教学过程中教师要及时点拨引导，做好学生的学习助手。 教学目标：通过本节课的学习，学生能够 知识目标：1.明确现在分词的各种形式； 2. 识别现在分词作状语的类别；
3.能把状语从句转换成相应的现在分词状语； 4.现在分词作状语的主语一致问题； 能力目标：学生能够正确使用现在分词作状语； 情感目标：1.树立英语学习的信心 2.增强小组的竞争与合作意识。
教学重点：1.帮助学生实现状语从句和现在分词作状语的互换
2.现在分词和不定式作状语时，其逻辑主语一般应与句子的主语保持一致。 （对策）：探究观察、小组讨论
教学难点：1.连词+分词形式（分词作状语的省略问题） 2. 现在分词的独立主格结构 （对策）：归纳法 教学用具：多媒体、黑板
教学过程：Lead-in→Presentation(Step2)→Consolidation(Step3)→Homework(Step4) 教学过程：
Step1:Lead-in （3mins）
Appreciate a short poem and find out the present participles used as adverbials. Step2:Presentation (32mins)
Part1:Changes in tense and voice of present participles (5mins) （现在分词在时态和语态变化）
语态 时态 一般式 完成式 主动 语态 主动关系 被动 语态 被动关系 几乎同时 有明显时间差 (1). ____ in the street,she saw an old friend. A.Walking B.walk C.having walked D.being walked (2).____ by his father, my friend was unhappy.
A.Having punished B.punished C. Being punished D.Punishing
(3).___ such heavy pollution already,it may be difficult to clean up the river. A. Having suffered B.Suffering C.To suffer D. Suffered (4). _______ for three minutes, the girl felt nervous.
A.stare at B.Being stared at C.Having been stared at D.To stare at Part2 识别现在分词所充当的各种状语 (8mins) 1.Review:判断V-ing在句中所做的成份 ①. Coming late for school is a bad habit. ②.We should avoid talking loudly in a library. ③.They are exciting . ④. They are visitors coming from several countries.
⑤. Coming late, the girl missed the train. 2.Observe and think :现在分词可以做哪些状语？
Competition: Recognize the adverbials according to the information and tell what kind of adverbial it is.)
Example:Having been translated into 20 languages, the book is famous all over the world now. (原因状语)
①.Being ill, he couldn’t come to school today. ( ) ②.Using your head, you will find a way. ( ) ③.Having arrived at the factory,they immediately set to work. ( ) ④Having a cold, the boy went to school as usual. ( )
⑤.She was so angry that she threw the toy on the ground, breaking it into pieces. ( ) ⑥.The girl came in smiling. ( ) 小结：现在分词可以充当原因条件、时间、让步、结果、伴随或方式状语。其中，_______、_______、______、_______常位于句首，_____、______常位于句尾，有时伴随状语或方式状语可谓语句中或句首。Part3 现在分词作状语，与状语从句的转换（13mins）
1.一句多译：观察并试着总结状语从句怎样转换成分词作状语。（从句 分词） When we are crossing the road, we often say: “Be careful!” When we are crossing the road,we often say: “Be careful!” When we are crossing the road,we often say: “Be careful!”
小结：当从句主语和主句主语一致，且从句谓语和主句主语是主动关系时，可以省略状语从句的_____、_____,当谓语中含有be或助动词do时，也应一起省略），再把谓语中的实义动词变成_______，其他不变。
2.请把下列状语从句转换成现在分词作状语。
Eg: After he heard a strong sound, he went out of the room for a look. = Hearing a strange sound, he went out of ….
①.As the girl was seriously ill, she was taken to hospital immediately. ______________________________________________________ ②.Being seriously ill, the girl was taken to ….
________________________________________________________ ③.As she didn’t know any French, she couldn’t get any one to help her. ________________________________________________________
3.看谁反应快：判断下列现在分词作哪种状语，并把其可以替换的逻辑连词填入括号中。 ①.Working harder at English, you will make greater progress. (_______ 状语) ___you work harder at English, you will make greater progress. ②.Feeling very tired, they kept running. (______ 状语) ________ they felt very tired, they kept running.
③.Having finished their homework, they went home. (______ 状语) ______ they had finished their homework, they went home.
*Having finished their homework表现的动作在went home( ), 故用分词的（ ）式. ④.The children ran out of the room,laughing merrily. (______ 状语)
提示：现在分词作伴随状语相当于一个由______连接的并列谓语或并列句。 Part4:主语的一致性 (6mins)
1.从句的主语和主句的主语必须一致。 判断下列句子的正（T）误(F):
Hearing the news, tears ran down her face. ( ) Hearing the news, she cried. ( )
Looking out through the window,the garden is beautiful. ( ) Looking out through the window,I found the garden beautiful. ( )
提示： (1).从句的主语和主句的主语必须一致。即-ing分词作状语时，它的逻辑主语就是整个句子的主语，并表示主动的关系。否则，
(2).分词必须有自己的主语。这种带主语的分词叫做分词的独立结构。在句中作状语，表示时间、条件、原因、结果、让步、伴随或方式。 2.完成句子
①._____________,we`ll do another two exercises. 如果时间允许，我们将做另两个练习。
②.______________,we decided to go swimming. 天气好，我们决定去游泳。 Step3:Consolidation (5mins)
用动词的恰当形式填空。
While in London,I just had to go to the British Museum.There`s so much1._____(see) and I
only had time to spend a few hours there. 2.____ (see) the pocket watches,I was reminded od the old watch my grandfather used to wear.I don`t think I ever saw him without it.Then I went to the Monkey Gallery.They have got an 3. _____ (amaze) collection of coins,some 4.____ (be) over 2,000 years old.Next stop was the Chinese collection. 5._____(live) in Hong Kong for so many years,I was very interested in this.
After looking at the Chinese collection, I had hoped to see the Mexican collection.Unfortunately, when 6.____(get) there,I found that it was closed. 7.____(spend) the whole morning walking around the museum,I decided that I wanted to do something very different in the afternoon.So I went to the London Eye 8._____(get) a bird`s view of the city.When 9.____ (see) from the top of the Eye,some of the biggest buildings appear very small.After that,tired from all the walking,I went back to my room at the hotel 10.____(stand) on the riverside and slept for a couple of hours before going out to have dinner.
Step4:Homework
Go on to fill in the blanks with the correct forms of Verbs
板书设计
The Present Participles as Adverbials
现在分词作状语
1、现在分词的形式：V-ing (即doing) 否定形式：not doing
2、状语从句结构：逻辑连词+主语+谓语+其他 分词作状语结构：Doing sth. Not doing sth.
小组加分统计： Group1 Group 2 Group3 Group4
教后反思：_______________________________________________________________________ ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ ________________________________________________________________________________________________________________________________________________________________ ________________________________________________________________________________________________________________________________________________________________
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