2023届高考英语二轮复习不定式做主语课件

这是一份2023届高考英语二轮复习不定式做主语课件，共20页。PPT课件主要包含了to remain ，it ，of ，for ，which ，to read ，to vote ，n 香烟，n 专家，n 顾问等内容，欢迎下载使用。

（3）常用句型： ①It is + adj. + fr /f sb. + t d sth. 形容词表示事物或行为的特点或性质，介词用fr，如gd，easy， difficult，pssible，necessary。 形容词表示人的品格或特点，介词用f，如kind，plite，implite， rude，flish。It is necessary fr us t prevent the war breaking ut. 我们有必要防止战争爆发。 It is t implite f yu t speak t an utstanding teacher like this. 你这样对一位杰出的老师说话太无礼了。
②It +be+ 名词+t d sth. 做某事是…… It’s my duty t take gd care f my yunger sister. 照顾好我的妹妹是我的责任。It must be great fun t fly t the mn in a spaceship. 乘宇宙飞船飞往月球一定很有趣。③It takes sb. sme time t d sth. 做某事花费某人多长时间It tk me mre than an hur t d my hmewrk yesterday evening. 昨天晚上我做作业用了一个多小时。
单句语法填空（1）Smetimes it’s better 　　　　 　（remain） silent. （2）Althugh 　　　　 　 is a hard task t prtect ur envirnment，we can’t help but g ahead. （3） 　　　 　 　（cntrl） the air pllutin is necessary. （4）It was flish 　　　　 　 him t endanger his life in that way. （5）Dn’t yu think it is rude 　　　　 　 him t ask a lady her age? （6）It is difficult 　　　　 　 him t live n such a small salary.
T cntrl/Cntrlling
完成句子（7）I dn’t think 　　　　　　　　　　　 （你问……是不礼貌的） hw lng the interview will last. （8） 　　　　　　　　　　　（保卫…… 是我们的职责） the cuntry against its enemies. （9） 　　　　　　　　　　　（ …… 花了我半个小时）t wash the clthes.
it is implite f yu t ask
It’s ur duty t defend
It tk me half an hur
2 疑问词 + 不定式（1）可用于该结构的疑问词疑问代词：wh，whm，what，which 疑问副词：when，where，hw （2）常接该结构的动词：knw，see，decide，tell，ask，cnsider，explain，learn，wnder
（3）该结构的句法功能：主语、宾语和表语Hw t cnstruct the theretical framewrk is very imprtant. 怎样构建理论框架很重要。（作主语）The questin is when t start develping such a vaccine. 问题是何时开始研制这种疫苗。（作表语） I knw where t find that patritic yung man. 我知道到哪里去找那个爱国的年轻人。（作宾语）【学法点拨】 “ 疑问词+不定式”结构相当于一个由疑问词引导的名词性从句。 A judge must decide whse prf t believe. = A judge must decide whse prf he/she shuld believe. 法官必须决定相信谁的证据。
单句语法填空（1）I culdn’t decide 　　　　 　 bike t buy. （2）Twenty students want t attend the class that aims t teach hw 　　　　 　 （read） fast. （3）When and where 　　　　 　（vte） hasn’t been decided. 完成句子（4） 　　　　　　　　（何时装修） the huse hasn’t been decided. （5）They didn’t decide 　 　　　　 　　（在哪里举行） the debate. （6）The questin is 　　 　　　　 　　 　（怎样拆卸） the machine.
When t decrate
where t hld
hw t take apart
3 不定式短语作独立成分 （1）一些不定式短语可用作独立成分，通常位于句首，有时位于句中或句末，要用逗号同其他句子成分隔开。T tell the truth，I dn’t like the gifted actress in the mvie. 说实话，我不喜欢这部影片中的那个有天赋的女演员。（2）常用短语 t sum up 总而言之 t be brief 简言之t tell the truth 说实话 t be exact 确切地说t cnclude 总而言之，最后t be frank 坦白地说t begin/start with 首先t be hnest 说老实话T be frank，yur thery is t abstract fr the students t understand. 坦白说，你的理论太抽象，学生们理解不了。
完成句子（1） 　　　　　 　　　（总而言之），mst f the cmmittee members supprted the idea but a few were against it. （2） 　　　　　（简言之），he was happy with the result. （3）She wrte， 　　　　　（确切地说），ten nvels in her lifetime.（4） 　　　　　　　　（首先），he’s t yung fr that kind f jb. （5） 　　　　　 （说老实话），I dn’t really want t g t the party tnight.
T sum up/T cnclude
T be brief
t be exact
T begin/start with
T be hnest
单个不定式作主语，谓语动词________________
不定式作主语时,可以用it作___________
如果要说明不定式表示的动作是谁做的，可以在不定式前加一个由 fr/f 引起的短语,构成___________________
It is+adj.+fr sb t d ……（修饰事物的形容词）
(adj.: easy ,difficult, cmfrtable, pleasant, light , dangerus， tiresme, interesting , heavy, fit)
Jin the wrds t make full sentences, and then jin the sentences t make a paragraph. Yu can add yur wn sentences if necessary t make yur paragraph mre meaningful.
1. imprtant/ avid/ passive cigarette smking It is imprtant t avid passive cigarette smking.
2. will take/ nutritin specialist/ a balanced diet menu/ make/ an hur/ fr yu
It will take the nutritin specialist an hur t make a balanced diet fr yu.
3. useful/ turn t/ fitness cnsultant/ fr advice
It is useful t turn t the fitness cnsultant fradvice.
4. illegal/ dangerus /take drugs5. harmful / skip breakfast / ften
It is illegal and dangerus t take drugs.
It is harmful t skip breakfast ften.
Cmplete the cnversatins with the crrect frms f the phrases in the bx.
1. A: Hell, dctr. I want t lse weight, but I just can’t seem t d it. What can yu d t help me?B: Well, first, it’s necessary t ______________ what yu eat. Cut ut all fatty fd and sugary drinks, and eat mre fruit and vegetables.
be in cntrl f
begin with, be in cntrl f, make a chice, decide n, make up ne’s mind
2. A: I really need t __________ a way t exercise mre. I culd use a fitness app, but my phne’s full.B: S delete a few files. I’m sure the app desn’t take up much space.3. A: Befre exercising, always d a few warm-ups t ___________.B: I knw. But then I always feel t tired t cntinue!
4. A: Shuld I g fr the pizza r the fried chicken? I hate ____________________ like these. Yu knw what—I’m ging t eat bth!B: Ww! Dn’t eat t much junk fd-yu’ll get fat, I’ve actually ___________________ t g n a diet, s I’ll just stick t the fruit salad.
making chices
made up my mind
1 A: I'm thinking abut riding a mtrbike t schl. What d yu think? B: Oh? Well, I think it's necessary ________________________________ first.2 A: Hw cme yu fainted suddenly yesterday? Didn't yu eat anything in the mrning? B: I'm n a diet. A: That's s bad! Yu knw it's imprtant _____________________ every mrning.3 A: I ften see yu arund Central Park. B: Yes, I like _______________________ there every weekend. We usually play ball games.4 A: I hear that the new headmaster has t many things t d. B: Yes. It will be a big challenge fr him_____________________________________.
A grup f students are chatting after class. Cmplete the cnversatins with the crrect frms f the phrases in the bx.
eat a gd breakfast get yur parents’ permissin hang ut with friends balance wrk and persnal life
t get yur parents’ permissin
t eat a gd breakfast
hanging ut with friends
t balance （his） wrk and persnal life
(WORKBOOK P69 EX. 1)
It will take us abut half an hur________________（到达）the West Lake. In the mrning, we will visit the places f interest arund r near the West Lake, including the lake, Gu Hill, Lingyin Temple, and Lei Feng Pagda. This will be a gd chance_____________（欣赏）the beautiful scenery as well as the histry and culture f Hangzhu. In the afternn we may_______（尝试）a taste f Lngjing Tea and ___________ （看电影）. Fr the evening, there are many things we can chse frm, like dinner, shpping, and experiencing the lcal night life. It will be fun fr us___________（选择）tgether what we want t d after yu arrive.
A hliday is a perfect time t relax. Yu are planning a trip t Hangzhu fr yur American friend. Cmplete the paragraph abut yur plan.
t reach/get t
t appreciate
(WORKBOOK P69 EX. 3)