2016级高二 book6 unit5 现在分词作状语-导学案
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Book4 Unit4/ Book6 unit5 Grammar The Present Participles as Adverbials现在分词作状语 Learning aims: By the end of this class, we are able (1)to master different kinds of adverbials that present participles can express. (2)to use present participles as adverbials correctly. Learning procedures: Step1:Lead-in (3mins) Appreciate a short poem and find out the present participles used as adverbials. Before my bed there is moonlight. So that it seems frost on the ground. Lifting my head, I watch the bright moonlight. Lowering my head,I dream that I`m home. 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 主动 语态 被动 语态
一般式 几乎同时 完成式 有明显时间差 主动关系 被动关系 (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. ________________ ①.We should avoid talking loudly in a library. _________________ ①.They are exciting . _______________ ①. They are visitors coming from several countries. ________________ ①. 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. ( ) ①.Using your head, you will find a way. ( ) ①.Having arrived at the factory,they immediately set to work. ( ) ①Having a cold, the boy went to school as usual. ( ) ①.She was so angry that she threw the toy on the ground, breaking it into pieces.( ) ①.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. ________ ________ _______, she was taken to hospital immediately. .As she didn’t know any French, she couldn’t get any one to help her. ______ ________ 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. ①.Feeling very tired, they kept running. (______ 状语) ________ they felt very tired, they kept running. ①.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. ①.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: 当堂检测 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。 ①.______________,we decided to go swimming.天气好,我们决定去游泳。
Step4:Homework Go on to fill in the blanks with the correct forms of Verbs in your text book. 学习反思: _____________________________________________________________________.