,Unit 4 Body language,高中英语必修四,Grammar（2）,新知讲解,新知讲解,动词ing,阅读下列句子，体会蓝体部分的用法,1Then Akira Nagata from Japan came in smiling，together with George Cook from Canada. 2When Darlene Coulon from France came dashing through the door.,新知讲解,动词ing形式作状语的注意事项,非谓语,1动词ing形式的时态 动词ing(短语)作状语时，要注意它的时间性，即注意是用其一般式(doing)还是用完成式(having done)。 当动词ing形式的动作与谓语动词的动作同时发生或几乎同时发生时，用一般式。当有先后关系，用完成式。,新知讲解,动词ing形式作状语的注意事项,非谓语,Walking in the street，I met an old friend of mine. 我正在大街上行走时，遇到了一位老朋友。(walking和谓语动词met同时发生) Having finished the letter，he went to post it. 他写完信后就把它寄了出去。(having finished是先发生的，went是后发生的),新知讲解,动词ing形式作状语的注意事项,非谓语,2动词ing形式的否定式 动词ing形式的否定式是在它的前面加not。 Not seeing John，I asked where he was. 我看不见约翰，于是问他在什么地方。,新知讲解,动词ing形式作状语的注意事项,非谓语,3动词ing形式的语态 使用动词ing形式的主动式还是被动式，这主要取决于现在分词和句子主语间的关系。句子的主语就是分词的逻辑主语。 Having been shown around the factory，they were very happy. (they是被带领着参观) 被领着参观了工厂后，他们很高兴。,新知讲解,动词ing形式作状语的注意事项,非谓语,4动词ing形式作评注性状语 少数动词ing(短语)并不表示主语的动作，即不存在其逻辑主语必须和句子主语一致的问题，只是表示说话人的态度。 generally/frankly/properly.speaking一般/坦白/恰当说来 judging from/by.从判断 considering.考虑到 supposing.假设,巩固练习,.单句改错 1He was caught in the rain，thus made himself catch cold. _ 2Having shown around the factory，they were very happy. _ 3Mary sat by the window of the classroom and reading a book. _ 4Use your head，youll find the right way to do it. _ 5Heard the news，we jumped with joy. _,mademaking,Having后加been,去掉and或readingread,UseUsing,HeardHearing,课堂小结,动词ing形式作状语,时间状语,原因状语,条件状语,让步状语,方式或伴随状语,结果状语,