人教版高二英语必修5Unit 1 Great scientists 单元课件（6份课件+音频）

课件28张PPT。Great scientists1 Get the hang of past participle use as attributive (定语), predicative (表语). Teaching aims过去分词的语法功能：过去分词在句中可以作1. 定语2. 表语3. 宾语补足语4. 状语一、过去分词作定语1. 作定语用的过去分词如果是单词，一般放在被修饰词的前面。E.g.There are many fallen leaves on the roof (屋顶) .The broken vase has been thrown outside. steamed roll retired workers escaped prisoners an unknown hero the exploited classes returned students花卷一位无名英雄退休工人被剥削阶级逃犯归国留学生2. 过去分词短语作定语时，则放在被修饰词的后面。 E.g.The play performed by the students was a great success.The novel written by him has sold out in a few days.注意: 1.不及物动词没有“被动语态”，所以, 不及物动词的过去分词没有被动的意义，只表示动作的完成. E.g. boiled water （开水） fallen leaves （落叶）the risen sun (升起的太阳) spoken English (英语口语) iced beer (冰镇啤酒) fried chips (炸土豆条) cooked food (熟食)2. 过去分词作定语时， 1) 及物动词的过去分词可改为动词为被动形式的定语从句。 E.g.time which is lostlost time2)不及物动词的过去分词作定语时，可改为动词为完成式的定语从句。a returned sailorA sailor who has returned二、过去分词作表语*表语过去分词作表语没有“完成”或“被动”之意，而是表示主语的状态、特点或思想感情等。 E.g.过去分词作表语用，相当于形容词，最常见的有:pleased, surprised, worried, excited, married, delighted, disappointed, interested, discouraged, drunk, tired, amused, astonished, limited, crowded, satisfied, puzzled, hurt, upset, bored, frightened, confused, exhausted, complicated, devoted, embarrassed, distinguished, 等。过去分词作表语与被动语态的区别。分词作表语表示主语的状态，而被动语态则表示被动的动作。 My glasses are broken. 我的眼镜碎了。 My glasses were broken by my son.我的眼镜被我儿子摔碎了。(状态)(动作)注意：The door was closed by Tom. The door was closed.I was greatly surprised by a knock at the door. I was greatly surprised at the news.(状态)(动作)(动作)(状态)Exercises2. The girl who is dressed in red is Kelly’s long-lost friend.= The girl _____ is Kelly’s long-lost friend.练习: 句型转换A thief stole the goat that was tied to the tree.=A thief stole the goat _____ to the tree.tieddressed in red3. The castle, which was burnt down in the sixteenth century, was never rebuilt.= The castle, _____ _____, was never rebuilt. burnt down in the sixteenth century4. Father beat the son who was lost in the online games. =Father beat the son _____ in the online games. lost5. The project, which was designed by the Chinese engineers, was constructed in only 2 year. = The project, _____ _____, was constructed in only 2 year. designed by the Chinese engineers 练习三、单选As is known to us all, traveling is _____, but we often feel _____ when we are back from travels. A. interesting; tiredB. interested; tiringC. interesting; tiringD. interested; tired 2. Hearing the _____ news, we all felt _____. A. encouraging, encouraging B. encouraged, encouraged C. encouraged, encouraging D. encouraging, encouraged3. From the dates _____ o ... ...