初中英语牛津版 (深圳&广州)九年级下册（2014秋审查）Unit 4 Natural disasters背景图课件ppt

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The dg is lvely, and I like it.
Is it a by r a girl?
Lk at the pictures and make sentences with it.
It is three ’clck.
It is summer nw.
It is sunny.
It is ht tday.
Hw far is it frm yur hme t yur schl?
Using it as the empty subject
Presentatin
We can use it as the empty subject like this:It is ne ’clck.It is summer nw. It rained all day.It is nly a five-minute walk frm my hme t the schl.It is ht in this rm.
It‘s nine ’clck in the mrning. My bedrm flr is a pl f water.
We can use it as the empty subject like this:
It is ne ’clck.It is summer nw. It rained all day.It is nly a five-minute walk frm my hme t the schl.It is ht in this rm.
It refers t the time.It refers t the seasn.It refers t the weather.It refers t the distance.It refers t the temperature.
Wrk ut the ruleWe ften use it t refer t the __________, ________, ___________, distance and temperature.
Language pints.
It作形式主语的常见句型：It + be + 形容词 + t d sth./ding sth. + be + 名词词组 + ding/ + be + 过去分词(said/reprted/believed...) + that...据说/据报道/人们认为.It seems/happens等不及物动词 + that...似乎/碰巧 takes (sb.) sme time t d sth.
It作形式主语的常见句型：1. It + be + 形容词 (fr sb.)+ t d sth./ding sth. that...
difficult, gd, interesting, necessary, dangerus…
It's imprtant fr us t keep healthy.保持身体健康对于我们来说很重要。
It作形式主语的常见句型：2. It + be + 形容词 (f sb.)+ t d sth./ding sth. that...
kind, warm hearted, utging, easy ging, clever…
It is very clever f yu nt t listen t him.你没听他的真是太明智了。
It作形式主语的常见句型：3. It + be + 名词词组 + ding/ 's n gd telling lies.撒谎没有好处。4. It + be + 过去分词(said/reprted/believed...) + is said that they have invented a new type f cmputer.据说他们发明了—种新型电脑。
It作形式主语的常见句型：5. It seems/happens等不及物动词 + that...It seems that he enjys pp sngs very much.似乎他很喜欢流行音乐。6. It takes (sb.) sme time t d sth.It takes me three hurs t get there by train.去火车去那儿花了我三个小时。
It作形式主语的常见句型：7. It's n use arguing abut it.争吵是没有用的。(it为arguing abut it的形式主语)8. It's uncertain wh will cme.谁会来还不确定。(it为wh will cme的形式主语)
Answer these questins using it as the subject.1What is the weather like tday?_________________________________________________2What is the time nw?_________________________________________________
It is very cld tday.It is nice ’clck.
3What is the date tday?_________________________________________________4What is the seasn nw?_________________________________________________5Hw far is yur hme frm schl?_________________________________________________
It is Jan. 14th.It is winter.It it tw kilmetres.
Put the wrds in the crrect rder t make meaningful sentences.1nw/fr supper/it/time/is_________________________________________________2autumn/in Australia/nw/it/is_________________________________________________
lt is time fr supper nw.lt is autumn in Australia nw.
Put the wrds in the crrect rder t make meaningful sentences.3abut five kilmetres/it/is/t the park_________________________________________________4windy/was/it/yesterday_________________________________________________
It is abut five kilmetres t the park.It was windy yesterday.
It is difficult fr her t get up n winter mrning.(It + be + 形容词 (fr sb.)+ t d sth./ding sth. that...)
It's kind f her t help that man.(It + be + 形容词 (f sb.)+ t d sth./ding sth. that...)
It is a pity that he has made such a mistake.(It + be + 名词词组 + ding/ that...)
It is said that she lived t be ver 100.(It + be + 过去分词(said / reprted / believed...) + that...)
It happens that they were absent. (It seems/happens等不及物动词 + that...)
It tk him all night t d his hmewrk.(It takes (sb.) sme time t d sth.)
We can als use it as the empty subject f a sentence t replace a t-infinitive.
It's imprtant t stick with it.
It tk a lng time t build the huse.(= T build the huse tk a lngtime.)It is wrng t pay n attentin t Kevin. (=T pay n attentin t Kevin is wrng.)It is nt a gd idea t sit arund and wrry abut the fld.(=T sit arund and wrry abut the fld is nt a gd idea.)
We can als use it as the empty subject in the fllwing sentence pattern：It seems / appears that seems/appears that nbdy is paying any attentin t the fld.
Language pints
1. It is clear / cmmn knwledge/ … that …It is cmmn knwledge that swimming is ne f the best frms f exercise. 大家都知道游泳是最好的锻炼方式之一。2. It is said / reprted / … that …It is said that this medicine can alleviate pain. 据说这种药物能够缓解疼痛。
3. It is a pity that …It is a pity that we shuld nt meet last night. 真遗憾我们昨天晚上没有见过面。4. It desn’t matter + if/wh-从句It desn't matter if yu win r lse. 你是赢是输都无所谓。
Write a sentence using it and a t-infinitive under each picture belw.
1calm/stay/fire/imprtant________________________________________________________
It is imprtant t stay calm when there is a fire.
2frest/start/fire/dangerus________________________________________________________
It is dangerus t start a fire in the frest.
3take/umbrella/gd idea________________________________________________________
It is a gd idea t take an umbrella.
4have/park/picnic/nice________________________________________________________
It is nice t have a picnic in the park.
put the wrds in brackets in the crrect rder t cmplete the cnversatins.
1S1:Lk at the sky. There are many dark cluds, and the wind isblwing strngly.S2:__________________________________________________(it/seems/a typhn/that/cming/is)2S1:Is yur father ging t Beijing tday?S2:N. _______________________________________________(it/appears/has been cancelled/the flight/that)
It seems that a typhn is cming.
It appears that the flight has been cancelled.
3S1:Mary lks very sad. ________________________________________________.(it/seems/smething bad/her/that/has happened t)S2:l heard that her sn died in the fld.
It seems that smething bad has
happened t her
1.T learn Chinese well is nt easy fr freigners.It is nt easy fr him t learn Chinese well.2. T keep up with the rapid pace f change is difficult.It is difficult t keep up with the rapid pace f change. 3. T inhale pisnus gas is dangerus.It is dangerus t inhale pisnus gas.
Rewrite the sentences belw.
4.It is interesting t cmpare their situatin and urs. T cmpare their situatin and urs is interesting.5. It is easy t miscnstrue cnfidence as arrgance. T miscnstrue cnfidence as arrgance is easy.6. It is safe t give the mney t the bank fr keeping. T give the mney t the bank fr keeping is safe.