高一英語必修4課件2-1.ppt

.詞匯過關(guān) 1_adv.曾經(jīng) 2_n數(shù)據(jù)，數(shù)字 3_vt. & vi.預(yù)言；預(yù)測；預(yù)示 答案：1.ever 2.statistic 3.predict,.短語自查 1would like_ 2go to bed_ 3_談?wù)?答案：1.想要 2.上床睡覺 3.talk about,.句式翻譯 1Have you ever grown any plants? If so, what did you do to grow them? If not, what kind of plant would you like to try growing? _ 2What do you think would happen if tomorrow there was suddenly no rice to eat? _,答案： 1你曾種植過植物嗎？如果種過，為了種植它們你都做了些什么？如果沒有，你想嘗試種植哪種植物？ 2如果明天突然沒有大米吃了，你認(rèn)為會發(fā)生什么事？,.單詞突破 1ever adv.在任何時候；曾經(jīng) 常用于否定句、疑問句、條件從句或比較從句中，除標(biāo)明是過去時間，可以用于過去時外，一般只用于現(xiàn)在時或完成時。 I dont remember ever seeing him. 我不記得曾見過他。 If you are ever in Beijing, come and see me. 不管什么時候，如果你在北京，一定來看我。 Thats the biggest fish Ive ever seen. 那是我見過的最大的魚。,【知識拓展】 1)ever adv. 永遠(yuǎn)，總是(用于肯定句中) He is ever ready to help others. 他總是樂意幫助別人。 究竟，到底(用于疑問副詞或代詞之后，加強(qiáng)語氣) Why ever did you agree? 你究竟為什么要同意？,2)as ever依舊，仍然 than ever比任何時候 for ever永遠(yuǎn) yours everever yours(信末語)你永久的朋友 ever since從時候起,【牛刀小試】 (1)The coffee is wonderful! It doesnt taste like anything I_before. Awas having Bhave Chave ever had Dhad ever had 答案：C 此處強(qiáng)調(diào)現(xiàn)在的結(jié)果，ever.before是典型的現(xiàn)在完成時的特征。,(2)(2009湖南)I can _ be a teacher. Im not a very patient person. Aseldom Bever Cnever Dalways 答案：C 本題考查副詞的詞義辨析。 題意：我是絕對做不成老師的，我不是一個很有耐心的人。,根據(jù)漢語意思完成句子 (3)他的錢比以往任何時候都多。 He has _ _ _ _. (4)到七點(diǎn)時，北風(fēng)比以往吹得更強(qiáng)勁了。 By seven oclock, the wind was_ _ _ _. (5)你究竟走哪一條路？ _ _ _did you go? 答案：(3)more money than ever (4)blowing harder than ever (5)Which ever way,2statistic (n.) 1)(常用復(fù)數(shù)形式statistics)統(tǒng)計；統(tǒng)計數(shù)字；統(tǒng)計資料 These statistics show that there are 57 deaths per 1,000 children born. 這些統(tǒng)計數(shù)字表明每一千個出生的嬰兒中有五十七個死亡。 2)用statistics表示統(tǒng)計學(xué)，但作單數(shù)看。 Statistics is a branch of mathematics. 統(tǒng)計學(xué)是數(shù)學(xué)的一個分支。,【牛刀小試】 Statistics_that statistics_becoming hotter and hotter in recent years. Ashows; are Bshows; is Cshow; are Dshow; is 答案：D 題意：統(tǒng)計表示統(tǒng)計學(xué)在最近幾年正變得越來越熱，所以D項(xiàng)合適。,.句式點(diǎn)擊 1If so, what did you do to grow them? If not, what kind of plant would you like to grow? 如果種過，你是如何種植的？如果沒有，你想種植哪類植物呢？ 句中If so的意思為“要是那樣”，so用來代替前面的分句或句子；If not的意思為“如果不是那樣，否則”，都是承前省略。,Will you be free this afternoon? If so, let us go shopping. 今天下午你有空嗎？逛商場吧。 Are you ready? If not, Im going without you. 你準(zhǔn)備好了嗎？否則我就自己去了。,這種省略句還有：if ever“如果曾經(jīng)有的話”；if any“如果有的話”；if possible“如果可能的話”；if necessary“如果必要的話”。這種用法是為了避免重復(fù)，so用于代替前面句子的肯定假設(shè)，not代替前面句子的否定假設(shè)。,Did Jack sell the house? And, if so, what happened to the money? 杰克是不是把房子賣了？如果是賣了的話，那么那筆錢怎么處置呢？ Please correct my mistakes if any(if there is any mistakes) 如果有錯的話，請改正我的錯誤。 Come to visit me next time, if possible. 如果可能的話，下次一定要來看我。,【牛刀小試】 (1)(2008安徽)Have you got any particular plans for the coming holiday? Yes._， Im going to visit some homes for the old in the city. AIf ever BIf busy CIf anything DIf possible,答案：D 問句為“對于既將到來的假期，你有什么特別的計劃嗎？”答語為“是的。如果可能的話，我要去城里拜望一些老人。”if ever“如果曾經(jīng)有的話”；if busy“如果忙的話”；if anything“若有什么事的話”；if possible“如果有可能的”，是if it is possible的省略。,(2)I might be away next week. If_， I wont be able to see you. Athat Bthis Cso Dit 答案：C 此處考查if so, so指代前文內(nèi)容。,(3)Will you get a free evening next week？_，let us have dinner together. AIf so BIf not CEven though DAs if 答案：A if so意為“要是那樣，果真如此”，so用來代替前面的分句或句子，構(gòu)成縮略條件句，語義根據(jù)上下文而定。if not用在條件句后，表示“不然；要不”的意思。題意：下周你能有一晚上空閑嗎？如果有，我們一起吃頓飯。,2What do you think would happen if tomorrow there was suddenly no rice to eat? 如果明天突然無大米可以食用，你認(rèn)為會出現(xiàn)何種局面？,1)該句中含有“雙重疑問句”，其結(jié)構(gòu)為：特殊疑問詞不帶賓語的一般疑問句陳述結(jié)構(gòu)。從語法角度看，do you think為插入語，句子的主要部分為What would happen？由于插入語把原先的特殊疑問句一分為二，故無論特殊疑問詞在句中擔(dān)任何種句子成分，句子都要采用陳述語序。此類結(jié)構(gòu)除了do you think外，還有：do you suppose, do you imagine, do you guess, do you expect, do you hope, do you consider, do you say, do you know等。例如：,What do you think is the proper time for us to start? 你認(rèn)為我們什么時間出發(fā)合適呢？ Who do you suppose helped me in the darkness? 你想會是誰暗中幫了我呢？ Who do you believe is to blame? 你認(rèn)為應(yīng)該責(zé)備誰？ What time does the letter say he will start? 信中說他什么時間動身？,【知識拓展】 這種句型不能用Yes或No來回答，必須把結(jié)構(gòu)中的插入語變成“陳述句賓語從句”的形式來回答；插入語也可后置，其前用逗號。例如： What do you think the ocean bottom is made up of? I think it is made up of irregular plains. (or：It is made up of irregular plains，I think.) “你認(rèn)為海底是由什么組成的？”“我認(rèn)為海底是由高低不平的平原組成的。”,【牛刀小試】 (1)_be sent to work there? AWho do you suggest BWho do you suggest that should CDo you suggest who should DDo you suggest whom should 答案：A 題意：你建議派誰去那兒工作？該考題中含有“雙重疑問句”結(jié)構(gòu)，即：特殊疑問詞主句的疑問語序從句的陳述語序。do you suggest必須位于特殊疑問詞的后面；此外，suggest表示“建議”時，其后的賓語從句必須采用虛擬語氣結(jié)構(gòu)，即：謂語動詞采用(should)do形式。,(2)Mum is coming. What present _for your birthday? Ayou expect she has got Byou expect has she got Cdo you expect she has got Ddo you expect has she got 答案：C 題意：媽媽要來了。你盼望她給你買什么生日禮物了？do you expect應(yīng)放在特殊疑問詞what之后。,2)賓語從句中使用了虛擬語氣，這類句子表示與事實(shí)相反的情況或?qū)崿F(xiàn)的可能性不大的情況。 If I had money, I would buy a new car. 如果我有錢，我會買一輛新車。 If I should know her, I could help her. 如果我認(rèn)識她，我就會幫助她。 If he were to do the job, in what way do you think he would do it? 要是他來做這份工作，你認(rèn)為他會用什么方法來做呢？,表示將來情況的虛擬條件句，謂語動詞的形式可用下表表示：,【牛刀小試】 (3)(2009天津)This printer is of good quality. If it_break down within the first year, we would repair it at our expense. Awould Bshould Ccould Dmight 答案：B 考查虛擬語氣。題意：這臺打印機(jī)質(zhì)量很好。如果一年內(nèi)它壞了，我們會免費(fèi)為你修理。對將來的虛擬中，從