九年级下册Unit 1 Asia授课课件ppt

这是一份九年级下册Unit 1 Asia授课课件ppt，文件包含peried4Unit1Grammarpptx、9下Unit1AsiaGrammardoc、第4课时Unit1Period4Grammardocx等3份课件配套教学资源，其中PPT共28页， 欢迎下载使用。
It is s lvely.
It’s raining.
It is sleeping
It’s 10 ’clck.
I.人称代词a.指代动物或者无生命事物b.指代未知性别的婴儿或孩子c.指代不认识的人d.指代上文提到的一个动作、一种情况、或者一个主意等
Wh’s it? _________is me.Lk at the picture. _____is a picture f ur schl.
3)---Is this jacket yurs? ---Yes, ______is.
2. 非人称代词有时并不指具体的东西，可指时间、日期、天气、距离等It was very quiet in the classrm.It is half an hur’s walk t the city.
Read and analyze the fllwing sentences.
It is Friday tday.It was very cld last Mnday. It is abut 8:30 nw.It is abut 25km frm Lngxian t Bazi.It lies in the suth f Shaguan city.It is 40°C ! Yu gt a high fever! Cnclusin :it 可以用作非人称代词，表示_____,_____,______,______,______,_____等。
temperature
1. I can’t find my pen. I’m ging t buy _____.2. Life tday is better than ______ in the ld days.3. I can’t find my pen. I must have lst _____.
_____用来指代前面提到的可数名词，所指的是事物本身。______则用来替代前面出现过的可数名词，泛指，指一类事物中的一个。______用来代替不可数名词或单数可数名词，特指。
it/ ne/ that 的区别
当不定式、动名词、从句等用作句子主语时，为保持句子平衡，通常把真正的主语放在句末，而在句首使用形式主语it.
二、It 作为形式主语
1.It is illegal（fr a teenager）t drive a car withut a is necessary fr yu t give him a letter.Cnclusin：句1和句2中 it 的作用是_________,真正主语是 __________。　　
（1）It +be +adj.+（fr sb.）t d sth.此处adj. 通常为描述事件的形容词：easy，difficult，hard，necessary，impssible，likely，right，wrng，imprtant，bvius，useful，useless，dangerus…
（2）It +be+ adj+ f sb. t d sth此处adj. 通常为描述人的形容词：kind，unkind，nice，rude，cruel，cnsiderate，careless，flish，stupid，wise，crazy.1. It's kind f yu t help me with the prblem.某人做某事某人是…….
2. It’s flish f yu t quit yur jb nw.
3.It is n gd crying ver spilt is n use casting pearls befre swine .在句3与句4中，it的作用是_________, 真正主语是____________.
构成如下结构：It is +n use/n gd/nt any gd/nt any use+ ding sth.
It is bvius that the water was t blame.Is it pssible that he will becme the chairman f ur cuntry?It is amazing that at my age I still lk like a student!Analysis：it是____________, 句子真正的主语是___________________
that引导的主语从句
Cnclusin：It is+ ____+ that从句
It is said that…It is reprted that… It is suppsed that… It is hped that… It is well knwn that… It is generally cnsidered that…It is suggested that…
It is said () that ...
句型中it 仍是形式主语，真正主语是that引导的主语从句。
1.吸烟危害健康，这是事实。2.碰巧我们在同一间大学 。3.据说日本发生了地震。 4.有人建议他应该立刻戒烟。
It is suggested that
It is said that
It is a fact that
It happens that
smking des harm t health.
we are in the same cllege.
there is an earthquake in Japan.
he shuld quit smking at nce.
1. I fund it very interesting t study English.我发现学英语非常有趣。2. I think it n use arguing with him.我认为和他争吵没有用。3. He made it clear that he was nt interested in this subject.他非常清楚地表示他对那门学科不感兴趣。
小结：it在句中充当_________，真正宾语可以由______ 以及________短语充当, 还可以由______引导的宾语从句充当。
总结：当复合宾语中的宾语是不定式、动名词宾语从句时, 往往把真正的宾语放在它的补足语后面，而用 it 作形式宾语, 放在宾语补足语之前。该句型中的 it 作形式宾语, 常用的动词有think, believe, make, find, cnsider, feel等。动词+it+宾语补足语+不定式（动名词或从句）
Eg. We think it n use cmplaining.
make itfrget itbelieve it r nt Dn’t mentin it It desn’t matter It(That) depends Gt itIt’s hard t sayIt’s up t yu t d sth.take it/things easy
成功，做到，赶上等别提了，忘了它吧信不信由你别提了，表示不用谢没关系视情况而定明白了，懂了很难说 由你来决定做某事不要慌，别担心，沉住气
Rewrite the sentences using an “it” structure.
1 Giving up smking is difficult. (It is…)2 Mst peple believe smking causes cancer. (It is believe that…)
It is difficult t give up smking.
It is believed that smking causes cancer.
3 Dn’t try t quit n a stressful day. (It’s n use…)4 yu culd suffer frm bad health if yu keep smking. (It is likely that…)
It is n use trying t quit n s a stressful day.
It is likely that yu culd suffer frm bad health if yu keep smking.
1. 是到戒烟的时候了。(quit)
2. 让人惊讶的是在我这个年纪我依然这么健康。(It is amazing that...)
It is time t quit smking.
It is amazing that at my age I am still s fit.
It seems strange that the man wh had develped cmmunism shuld have lived and died in Lndn.
4. 这似乎是一件怪事：这位发展了共产主义的人竟然在伦敦生活过，并且在伦敦去世。
3. 一旦你吸烟上了瘾, 你会发现要把它戒掉很难。(addict... t; tugh)
Once yu are addicted t smking, yu will find it tugh t give it up.
5.I _______________ (认为有必要) t take plenty f ht water every day.(think)6. ______________(据说)the prfessr has already succeeded in carrying ut this expriment.(say)8.____________________(抱怨是毫无用处的)，and they never listen.(use)
think it necessary
It is n use cmplaining
Revise the grammatical items in this perid. Finish all the exercises in the wrkbk.Preview the next perid.