现在分词用法课件 高考英语.ppt

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1、现在分词作状语,现在分词是由动词原形加词尾-ing构成，现在分词有时态和语态的变化，通常有以下几种形式（以do为例）,主动形式 被动形式 一般时 (not) doing (not) be doing 完成时 (not) having done (not) having been done,现在分词做状语，通常都表示主语在进行的另一个动作，其逻辑主语必须与句子的主语保持一致，且必须与句子的主语是逻辑上的主谓关系，动词ing形式的动作是次要动作。现在分词可以做时间，条件，结果，让步，方式等状语，相当于相应的状语从句。做时间，原因或条件时，通常位于主句前面，做方式，伴随或结果状语时，通常位于主句后面

2、。如果分词表示的动作和谓语的动作同时发生或几乎同时发生，用现在分词一般时，如果分词动作明显在位于动词之前发生，用现在分词的完成时。,一做伴随状语：分词等于and连接两个动词或分句,The dog came in.It follow its master. =The dog came in,following its master. The children ran out of the room,laughing and taking merrily. They stood there for an hour,watching the game.,二原因状语相当于as,since,becaus

3、e等引起的原因状语从句，常位于句首，句中或句末。,Seeing nobady at home,she decided to leave them a note.No knowing her address,we couldnt get intouch with her.Being so poor in those days,we couldt afford to send the boy to the hospital.Not having received an answer,he decided to write another letter.,三时间状语 相当于when,while,as

4、等引导的时间状语从句，常位于句首或句末,Having arrived at the factory,they immediately set to work.Be careful when crossing the street.On arriving in London,he managed to get in touch with her.,四条件状语 相当于if等引导的条件状语从句，常位于句首,Working hard , you will succeed.Knowing anything about it, I will tell you all.-I could go and get

5、 someone to bring the car. -No,thanks.Ill be better if walking.,五结果状语 现在分词表示必然的结果，前可加thus。（不定式表示出乎意料的结果）,His husband died in 1942,leaving her with five children.The bus was held up by snowing,thus causing the delay.He was caught in the rain , thus making himself catch cold.,六让步状语 相当于although,though,even if,even though引起的让步状语从句，常位于句首,Being a lot of books for exam,he failded in it because of learning method.Knowing all this ,they made me pay for the damage.,