牛津版 (深圳&广州)九年级下册（2014秋审查）Unit 4 Natural disasters图文课件ppt

这是一份牛津版 (深圳&广州)九年级下册（2014秋审查）Unit 4 Natural disasters图文课件ppt，文件包含Unit4NaturaldisastersPeriod3Grammar课件pptx、Unit4NaturaldisastersPeriod3Grammar教案doc、Unit4NaturaldisastersPeriod3Grammar练习doc、Unit4NaturaldisastersPeriod3Grammar学案doc、人称代词it之形式主语mp4等5份课件配套教学资源，其中PPT共22页， 欢迎下载使用。

Watch the vide and talk abut it.
Read the sentencesIs it true that yu’ll g abrad next mnth?It's imprtant t learn a freign language.It takes at least ten hurs t get there.
人称代词it之形式主语1. 当不定式、动名词或从句在某个句子中作主语，为保持句子结构前后平衡，避免头重脚轻，常用it作形式主语置于句首，而将真正的主语置于句尾。此时的it只起先行引导作用，本身无词义。2. 当句子主语为动名词或从句时，也常使用it作形式主语。
Let’s review
I had a dream last night. It was abut a natural 1. d_______. My bedrm was flded like a 2. p_____. When I lked ut f the windw, water was everywhere. It 3. c_________ rads, parks and small huses. Lts f 4. ________ were flating. I tried t call my dad, but the line was 5. d______. I sent an email t him. But he said he was busy. He had t 6. s_______ with his wrk.
根据课文内容及首字母提示,补全下面短文,每空一词
He culdn’t give me any help. I asked fr help by 7. e_________ my best friend. He culdn’t help either. Peple just sat and 8. s________ at the screens. It 9. s__________ that cmputers were mre imprtant than the fld. When they fund the water cvering their cmputers, they started t 10. n________, but it was t late.
Let’s learn
1. It is ne ’clck. 2. It is summer nw. 3. It rained all day. 4. It is nly a five-minute walk frm my hme t the schl.5. It is ht in this rm.
在表示时间、季节、天气、距离或温度的表达方式里，我们用it作形式主语。此时，it无实际意义但不可以省略。
(The seasn)
(The weather)
(The distance)
(The temperature)
Read and summary
1. What's the weather like tday?2. What's the time nw?3. What is the date tday?4. What is the seasn nw?5. Hw far is yur hme frm schl?
Answer these questins using it as the subject.
1. nw/ fr supper/ it/ time / is2. autumn/ in Australia/ nw/ it/ is3. abut five kilmetres/ it/ is/ t the park4. windy/ was/ it/ yesterday
Put the wrds in the crrect rder t make meaningful sentences.
It is time fr supper nw.
It is autumn in Australia nw.
It is abut five kilmetres t the park.
It was windy yesterday.
My bss has given me sme wrk. It’s imprtant t stick with it.2. It tk a lng time t build the huse.3. It is wrng t pay n attentin t Kevin.4. It is nt a gd idea t sit arund and wrry abut the fld.
当句子的主语是动词不定式短语时，动词不定式短语一般不放在句首，而通常用it来作为句子的开头，动词不定式短语则放在句末。
1 T learn English well is nt easy fr him. 2 T study tw languages is very hard. 3 T find ut the truth is imprtant.
Rewrite the sentences belw using it as the empty subject.
It is nt easy fr him t learn English well.
It is very hard t study tw languages.
It is imprtant t find ut the truth.
Write a sentence using it and a t-infinitive under each picture belw.
It is imprtant t stay calm when there is a fire.
It is dangerus t start a fire in the frest.
It is a gd idea t take an umbrella.
It is nice t have a picnic in the park.
1. It seemed that nwhere was t far fr Zheng He t visit.2. It seems/appears that nbdy is paying any attentin t the fld.3. It seems/appears that his mther knws the truth.
It 作为形式主语还常见于It seems / appears that… 的句型中。我们常常将it放句首作主语，而将真正的充当主语的从句移到句末
Put the wrds in brackets in the crrect rder t cmplete the cnversatins.
1 S1: Lk at the sky. There are many dark cluds, and the wind is blwing strngly. S2: ______________________________ (it/seems/a typhn/that/cming/is)2 S1: Is yur father ging t Beijing tday? S2: N. ______________________________________ (it/appears/has been cancelled/the flight/that)
It seems that a typn is cming.
It appears that the flight has been cancelled.
3 S1: Mary lks very sad. __________________________________________ (it/seems/smething bad/her/that/has happened t) S2: I heard that her sn died in the fld.
It seems that smething bad has happened t her.
1. It + be + adj. + (fr/f sb)+ 动词不定式 It’s hard fr him t learn English well.  It is implite f him t laugh at the little girl.2. It is n use/gd/a waste f time ding sth. It is a waste f time watching TV.3. It + takes ( sb )+ 时间（金钱）+ 动词不定式  It tk him tw hurs t finish his hmewrk last night.
其他it作形式主语常见句型 
4. It + be + 形容词+主语从句 It is uncertain whether he can cme t Jenny’s birthday party r nt.5. It + be + a fact/a pity/a shame/an hnur/a questin + 主语从句 It’s a pity that yu missed the exciting ftball match. It remains a questin whether he will cme r nt. 6. It + be + annunced/believed/expected/hped/decided/reprted/ said/shwn + 主语从句 It is reprted that 16 peple were killed in the earthquake. It is nt decided wh will give the peratin t the patient.
1. In fact is a hard jb fr the plice t keep rder in an imprtant ftball match. A. this B. that C. there D. it2. Is ______ necessary t take ff ur shes when we enter the lab? A. everyne B. this C. her D. it3. _______ will take yu a lt f time t find him in the crwd. A. It B. I C. We D.They
Grup cmpetitin
4. It is n use his _________ there, the situatin is hpeless nw. A. t g B. t be ging C. ging D. having gne5. ___________ is knwn t all that Shenzhu Ⅸ Launched Successfully. A. As B. What C. It D. That
1. it作形式主语可以表示时间、季节、天气、距离或温度等。2. it作形式主语可以表示动词不定式3. It seems / appears that… 4. It + be + adj. + (fr/f sb)+ 动词不定式5. It is n use/gd/a waste f time ding sth.
it作形式主语用法归纳