非谓语动词和从句的转换精选课件.ppt
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1、关于非谓语动词和从句的转换第一页,本课件共有29页 在英语中,动词按其在句子中的作用,可分为:谓在英语中,动词按其在句子中的作用,可分为:谓语动词和非谓语动词。语动词和非谓语动词。谓语动词谓语动词就是可以单独直接在句子中做谓语的动词。就是可以单独直接在句子中做谓语的动词。非谓语动词非谓语动词就是不能单独在句子中做谓语的动词。就是不能单独在句子中做谓语的动词。一、什么叫做非谓语动词一、什么叫做非谓语动词第二页,本课件共有29页二、非谓语动词的表现二、非谓语动词的表现形式形式有:有:不定式不定式 (to do)现在分词现在分词(doing)过去分词过去分词(done)动名词动名词 (doing)第
2、三页,本课件共有29页三、三、非谓语使用条件非谓语使用条件一个句子当中,一个句子当中,已经存在一个主句(谓已经存在一个主句(谓语动词)语动词),又没有连词又没有连词的情况下的情况下She got off the bus,but left her handbag on her seat.She got off the bus,leaving her handbag on her seat.第四页,本课件共有29页主语表语宾语补语定语状语不定式现在分词过去分词动名词组成介词短语四、非谓语动词充当的成分四、非谓语动词充当的成分+第五页,本课件共有29页分词作分词作状语状语(分词做状语可以转换成其相对
3、应的状语从句来表分词做状语可以转换成其相对应的状语从句来表时间、条件、原因时间、条件、原因)Given more attention,the trees could have grown better.If the trees had been given more attention,the trees couldNot knowing his telephone number,she had some difficulty getting in touch with Bill.As she didnt know his telephone number,she had some 第六页,本
4、课件共有29页While waiting at the dentists,I read the whole of a short story.(=While I was waiting )Before being in the army,he was an engineer.(=Before he was in the army,)_(finish)my work,I went to bed.(=After I had finished my work,)Working hard,you will succeed.(=If you work hard,)Having finished第七页,本
5、课件共有29页Being so poor in those days,we couldnt afford to send the boy to hospital.(=As we were so poor)Weighing almost one hundred jin,the stone was moved by him.(=Though the stone weighed almost one hundred jin,)第八页,本课件共有29页1.时间状语:可改为时间状语从句,也可在分词前加上连词时间状语:可改为时间状语从句,也可在分词前加上连词“when,while,until”等,使其时间
6、意义更明确。等,使其时间意义更明确。(多置于句首,也可置于句末多置于句首,也可置于句末)2.原因状语:可改为原因状语从句或并列结构。原因状语:可改为原因状语从句或并列结构。(多置于句多置于句首或句末,也可置于句中首或句末,也可置于句中)3.条件状语:可加连词条件状语:可加连词if,unless 等;也可换成条件状语等;也可换成条件状语从句。从句。(多置于句首多置于句首)4.让步状语:有时可加让步状语:有时可加 although,though,even if,even though,whetheror 等连词,可转换成让步等连词,可转换成让步状语从句。状语从句。(多置于句首多置于句首)5.结果状
7、语:可改为结果状语从句。(结果状语:可改为结果状语从句。(多置于句末多置于句末)6.方式、伴随状语:可改成并列结构或从句。方式、伴随状语:可改成并列结构或从句。(多置于句多置于句末末)A.现在分词与过去分词作状语现在分词与过去分词作状语第九页,本课件共有29页When they heard the news,they all jumped with joy.HearingWhen the baby saw its mother,it smiled.Seeing As they hoped to get our support,they sent us their statement.Hopin
8、g The snow lasted a week,so it resulted in a serious traffic confusion in the whole area.resultingWhen hearingWhile he worked in the factory,he was an advanced worker.WorkingWhile workingWhen seeing 第十页,本课件共有29页When it is seen from the hill,the park looks very beautiful.Dont speak until you are spok
9、en to.Because he was greatly touched by his teachers words,the boy did a lot of things to help his classmates.If we were given more time,we could do it much better.He was warned of the danger,but he still went skating on the ice.SeenGreatly touchedGiven spokenWarned he If given When seen第十一页,本课件共有29
10、页但是但是,有些分词作状语是独立结构有些分词作状语是独立结构,不与句子的主语不与句子的主语产生联系产生联系;常见的有常见的有:judging from,generally speaking,compared to/with,considering,providing(ed),supposing etc.Generallyspeaking,womenlivelongerthanmen.Judgingfromwhatyousay,heoughttosucceed.Consideringthedistance,hearrivedveryquickly.Takingeverythingintocons
11、ideration,youshouldleave.一般说来,女人比男人活得长。一般说来,女人比男人活得长。从你的话看,他应当能成功。从你的话看,他应当能成功。考虑路程,他到达得很快。考虑路程,他到达得很快。考虑到各种因素,你最好离开。考虑到各种因素,你最好离开。第十二页,本课件共有29页B.不定式作状语不定式作状语不定式作状语常用来表目的、结果或原因、程度、不定式作状语常用来表目的、结果或原因、程度、条件等。条件等。She looked into the window,and wanted to see what was going on inside.She looked into the
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