教育精品：教育精品：it的用法.ppt
IT 用法用法（the usage of“it”）1.it作人称代词作人称代词1.1 Ningbo is a beautiful city,isnt it?1.2 Is this your dog？No,it isnt.1.3 It was a great surprise to me when he did a thing like that2.非人称代词非人称代词it2.1 It is a lovely day,isnt it?2.2 It was nearly midnight when she came back.2.3 It was very quiet in the caf.2.4 It is half an hours walk to the city centre.3.it的其他用法的其他用法3.1 Who is it?-Its me.3.2 It doesnt matter.找出课文中含有it的句子v1.It seems amazing that at my age I am still enough to cycle 20 kilometers.v2.You are finding it difficult to give it up.v3.How easy it is to begin smoking and how tough it is to stop.v4.It was very difficult to quit.v5.It was more difficult for smoking couples to become pregnant.1.It is clear(obvious，true，possible，certain.)that.v该句型中该句型中it 是形式主语，真正的主语是是形式主语，真正的主语是that 引导的主语从句，常译为引导的主语从句，常译为“清楚（显然，真清楚（显然，真的，肯定）的，肯定）”是主语从句最常见的是主语从句最常见的一种结构。一种结构。vIt is very clear that hes tall like a tree.2.It is important(necessary，right，strange，natural.)that.v该句型和上一个同属一个句型；由于主句中该句型和上一个同属一个句型；由于主句中的形容词不同，的形容词不同，that 后的从句中要用虚拟语后的从句中要用虚拟语气（气（should+动词原形），动词原形），should 可以省可以省去，建议记住该句型中的形容词。去，建议记住该句型中的形容词。vIt is important that we(should)learn English well.3.It is said(reported，learned.)that.v该句型中的该句型中的it 仍是形式主语，真正主语是仍是形式主语，真正主语是that 引导的主语从句；该结构常译为引导的主语从句；该结构常译为“据说据说（据报道，据悉）（据报道，据悉）”。vIt is said that he has come to Beijing.4.It is suggested(ordered/demanded/insisted/commanded.)that.v该句型和上一个同属一个句型，主句中的过该句型和上一个同属一个句型，主句中的过去分词是表示请求，建议，命令等词时，去分词是表示请求，建议，命令等词时，that后的从句要用虚拟语气（后的从句要用虚拟语气（should+动动词原形），词原形），should 可以省；常译为可以省；常译为“据建议；据建议；有命令）有命令）vIt is suggested that the meeting(should)be put off.5.It is no good(use)doing sth.v该句型中的真正主语是动名词短语，主句中该句型中的真正主语是动名词短语，主句中的表语可以是的表语可以是no good，(not any good)，no use，(not any use)。vIt is no good learning English without speaking English.6123结构结构 v6指主句中常用的动词：指主句中常用的动词：think,believe,make,find,consider,feel；v1指的是形式宾语指的是形式宾语it v2指的是宾补的两种形式：形容词或名词；指的是宾补的两种形式：形容词或名词；v3指的是真正宾语的三种形式：不定式短语，动名词指的是真正宾语的三种形式：不定式短语，动名词短语或短语或that引导的宾语从句。引导的宾语从句。vWe think it our duty to clean our classroom every day.I 选词填空 v1.Its no good _(eat,eating)so much chocolates.2.Its not dangerous _(to help,helping)AIDS patients in a proper way.3.Its unbelievable_(that,since)he spends all his money on alcohol.4.Its believed _(because,that)somking does terrible damage to the heart and lungs.5.Itll give me great stress_(to finish,finishing)this experiment in two days.历年高考真题历年高考真题v1.The phone is ringing.-Who could _ be?It is already midnight.(2002年年)A.he B.it C.this D.that 2.For a long time after the operation,Linda found _ difficult to fall asleep.(2004年年)A.this B.one C.that D.it 3.After working for two hours,I found_impossible to complete the paper in time.(2009年年)A.me B.this C.that D.it 4.Have you got a camera?-No,I should buy _.(2010年年)A.it B.one C.that D.this5.It was on August 15,1945 _ the Chinese people won the final victory in the Anti-Japanese War.(2004年年)6._ makes me sick to think about the matter.(2005年)A.that B.which C.until D.while A.this B.it C.that D.whichHomework:Rewrite these sentences using it structure.v1.Giving up smoking is difficult.(It is)v2.Dont try to quit on a stressful day.(It is no use)v3.To remember this rule is important.v4.lying in the sun in winter is pleasant.Thank youThank you
