高中英语外研版 (2019)选择性必修 第二册Unit 4 Breaking boundaries课堂教学ppt课件

这是一份高中英语外研版 (2019)选择性必修 第二册Unit 4 Breaking boundaries课堂教学ppt课件，共30页。PPT课件主要包含了 inwith，assistant，assistance，something，somebody，pronoun，date，weather，place，time等内容，欢迎下载使用。
T learn the usage f it as an empty subject.T learn t describe a city by using it as an empty subject.
核心词汇教材原句 It assists peple based n need， regardless f which cuntry they are frm. 它根据需要帮助人们，不管他们来自哪个国家。
assist（sb.）in/with sth. 在……方面帮助（某人）
1 assist v. 协助，帮助
assist sb. in ding sth. 帮助某人做某事
We will assist yu in finding smewhere t live. 我们将帮你找个住的地方。Evidence shws that emjis can assist peple in/with cmmunicatin.有证据表明，表情符号可以帮助人们交流。［词汇复现］
with the assistance f 在……的帮助下cme t ne’s assistance 帮助某人
◆单句语法填空(1) The teacher asked Jhn t assist him 　　　 dividing the class int five grups.(2) In the future，we will have handy rbts and cmputers t assist us 　 　　the things that are bring.(3) If yu cme acrss faults but yu still want the bicycle，ask the shp 　 　　（assist）t reduce the price.(4) The translatins were carried ut with the 　　 　（assist） f a medical dictinary.◆完成句子(5) I waited patiently hping that smene wuld 　　　 　　　 　　　 　（帮助我）.
cme t my assistance
I drpped my watch and it brke. There is a knck n the dr. It must be the pstman. What’s this? It’s a new machine.
What have we learnt abut it?
4. It is Friday tday.5. It was very cld last Mnday.6. It lies in the suth f Anhui.7. It is abut 8:30 nw.8. It is abut 25km frm my city t the capital.9. It is 39 degrees! Yu gt a high fever!
temperature
Lk at the sentences and answer the questins. Sentences (a) and (c) are frm the reading passage.
1. What des “it” refer t in sentences (a) and (c)?
“It” refers t “nt t take any chances” in sentences (a) and “t remember that Ebla desn’t respect natinal bundaries” in sentence (c).
2. What is the difference between the sentences in each grup? Why des the authr chse t use sentences (a) and (c) instead f (b) and (d)?
The first sentences in each grup use “it” as an empty subject at the beginning f the sentences.The reasn why sentences (a) and (c) are chsen is that the sentences are kept balanced and the key infrmatin f the sentences is emphasised.
I felt it was my duty as a dctr t g there and ffer my help. It is s inspiring t have clleagues like Wiltn, Maisy and Alfns.… it is abslutely essential fr us all t cllabrate t create a glbal cmmunity with a shared future f peace and prsperity.
Nw lk fr mre sentences with this structure in the reading passage, and summarise its use in yur wn wrds.
it常代替由不定式短语、动名词短语或从句表示的真正主语，作形式主语，而将真正的主语后置。it作形式主语，所代替的是句子的逻辑主语，并无实际词义。还可以保持句子的结构平衡，避免主语过长，显得头重脚轻。
it作为形式主语主要分为三种情况。
1. be+形容词+不定式 (It is + adj. + t d sth.) eg It is difficult t translate the bk.2. be+名词+不定式 (It is + n. + t d sth.) eg It was her duty t clean the rm.3. be+介词短语+不定式 eg It was against my principle t d that.4. 及物动词+宾语+不定式 It cst 150 yuan t buy the dress.
It’s n use / gd / fun / a waste f time ding sth.做某事没有用 / 没有好处 / 没有意思 / 是浪费时间eg It is n use ding that. It’s pleasant sitting here.
1. It + be + 形容词 +从句 (It is + adj. + 从句) eg It is natural that she knws everything abut it.2. It + be + 名词 +从句 (It is + n. + 从句) eg It is a questin hw he did it.3. It + 动词的被动语态+从句 eg It is nt decided wh will take ver the cmpany.4. It + be /其他系动词 + that从句 eg It may be /seems that he views the issue frm a different perspective.
1. It is clear / bvius / true / pssible /certain /…that… eg It is bvius that he’s late.2. It is imprtant / necessary / right / strange / natural / …that… (shuld) d… eg It is a necessary that yu d enugh exercises befre the race.3. It is said / reprted / learnt/ … that eg It is reprted that a seven-year-ld girl wn the game.
4. It is suggested / rdered/ required/ … that …(shuld) d… eg It is suggested that the meeting (shuld) be put ff.5. It is a pity / shame that… eg It is a pity that yu didn’t see such a gd film.6. It happens / seems /lks / appears / …that… eg It happens that I knw him.7. It desn’t matter whether / if… eg It desn’t matter if yu miss the bus, because there’s anther ne 15 minutes later.
8. It lks / seems as if eg It lks as if he is wrng.9. It takes …(sme time) t d … eg It tk us three hurs t get there.10. It is +形容词+(f sb) + t d… eg It is kind f yu t think s much f us.
Rewrite the underlined parts using it as an empty subject.
it is n lnger quite s difficult fr wmen and minrities t get rles in American film and televisin
it is nw a mre realistic hpe fr minrity actrs t becme a leading actr in Hllywd .it is mre cmmn than befre fr wmen t write and direct Hllywd films .
it is seen as acceptable by film studis t cast white actrs as Asian characters .
Cmplete the sentences.1. 对我来说，找到一个可以向他学习的当地人真是太好了。 _____________________ a native speaker t learn frm.2. 的确，智能手机在我们日常生活中扮演重要的角色。 ______________ a smartphne plays an imprtant rle in ur daily life.
It is great fr me t find
It is true that
3. 试图用武力解决问题是没用的，和谈才是唯一的办法。 ________________ t slve the prblem by frce. Peace talks are the nly slutin.4. 据说台风已造成了很多的破坏。 ________________ the typhn had caused a lt f damage.5. 遵守规则让社会保持秩序、人民生活安定是每个人的责任。 __________________________ the rules t keep the sciety in rder and peple’s lives safe.
It is n use trying
It was said that
It is everyne’s duty t bey
根据括号内的汉语提示用it作形式主语补全下面句子。1. _______________________ (争辩是没用的) abut the matter with him. 2. Jhn said ___________________________________________ (继续这个实验是重要的).3. They are gd friends. _____________________________ _________________ (难怪他们彼此如此熟悉).4. ___________________ ( 尚待分晓) whether the newly frmed cmmittee’s plicy can be put int practice.5. _________________________ ( 不难理解) why he did s at that time.
It is n use arguing
it was imprtant t cntinue with the experiment
It is n wnder that they knw
It remains t be seen 
It is nt hard t understand
each ther s well
Describe the city using the infrmatin prvided and it as an empty subject.
nt a surprising thing / students see different skin clurs in the same class
It is nt a surprising thing fr students t see different skin clrs in the same class.
pssible / peple hear many different languages and dialects
It is pssible fr peple t hear many different languages and dialects.
easy / peple find prducts frm all ver the wrld
It is easy fr peple t find prducts frm all ver the wrld.
nt difficult / freigners settle dwn and find a jb
a cmmn thing / peple frm different cuntries wrk in the same cmpany
It is nt difficult fr freigners t settle dwn and find a jb.
It is a cmmn thing fr peple frm different cuntries t wrk in the same cmpany.
Beijing tday is multicultural. It is nt a surprising thing fr students t see different skin clurs in the same class. It is pssible fr peple t hear many different languages and dialects. It is easy fr peple t find prducts frm all ver the wrld. It is nt difficult fr freigners t settle dwn and find a jb. It is a cmmn thing fr peple frm different cuntries t wrk in the same cmpany.
单句语法填空1.　　　　　 is said that he was a famus requires patience 　　　　　(teach) children.3.　　　　　 is nt easy fr us t master a freign is stupid 　　　　　yu t make such a mistake.5.　　　　　is a pleasure t be with is a fact 　　　　　she wn the first place.
用it有关句式完成句子1.你最好先完成你的家庭作业。　　　 　　　　　　　yu finish yur hmewrk first.2.真遗憾,他不能参加晚会。　　　 　　　　　　　　　he can’t attend the party.3.众所周知,钱不会长在树上。　　　 　　　　　　　　　that mney can’t grw n the tree.
It is best that
It is a pity that
It is knwn t all
4.据报道今天下午有暴风雨。　　　 　　　　　　　　there will be a strm this afternn.5.把这个句子译成英语很难。　　　 　　　　　　　　　this sentence int English.
It is reprted that
It is hard t translate
用it作形式主语翻译句子1.真奇怪,竟然没有人想要去那里。答案:It is strange that n ne wants t g there.2.很难说将需要多少钱。答案:It’s hard t say hw much mney is needed.3.地球围着太阳转是常识。答案:It is cmmn knwledge that the earth mves arund the sun.4.这样做是错误的。答案:It is a mistake t d it in this way.