高考英語大一輪復(fù)習(xí) 專項(xiàng)12 狀語從句課件.ppt

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專項(xiàng)十二 狀語從句,一、讓步狀語從句 讓步狀語從句的常用連詞有 although, though, even if, even though, as(從句需要倒裝), while (一般置于句首), no matter ＋疑問詞， 疑問詞＋ever。,Part,規(guī)律印證 考 點(diǎn) 落 實(shí) ， 步 步 為 “ 贏 ”,[邊 做 邊 悟],①(2013·江蘇卷)In the global economy, a new drug for cancer, ________ it is discovered, will create many economic possibilities around the world. 答案 wherever [分析句子結(jié)構(gòu)可知，“________ it is discovered”為狀語從句，空處在從句中作地點(diǎn)狀語，因此選wherever“無論在哪里”，引導(dǎo)讓步狀語從句。] ②(2013·遼寧卷) One can always manage to do more things, no matter ________ full one's schedule is in life. 答案 how [句意：一個(gè)人不論他生活中的日程有多么滿，總是能設(shè)法做更多的事情?？蘸竺娴膄ull是形容詞，所以應(yīng)該用how修飾，no matter how引導(dǎo)讓步狀語從句。],③(2013·四川卷) He is so busy.He cannot afford enough time with his son ________ he wants to. 答案 even if [句意：他很忙。即使他想陪他的兒子也沒有足夠的時(shí)間。even if引導(dǎo)讓步狀語從句。],二、時(shí)間狀語從句 1．when引導(dǎo)時(shí)間狀語從句，意為“正在這時(shí)”，表示某件事正發(fā)生或剛剛發(fā)生時(shí)，突然發(fā)生另一動(dòng)作： be about to do.when.正在做某事這時(shí)……；be doing.when.正在做某事這時(shí)……；be on the point of doing.when.；正在做某事這時(shí)……；had just done.when.剛做某事這時(shí)…… ①(全國(guó)卷Ⅱ) 湯姆正要關(guān)窗戶，這時(shí)他的注意力被一只鳥吸引住了。 Tom ________________ when his attention was caught by a bird.,②(浙江高考) 一個(gè)星期五，我們正在收拾行李去度周末，這時(shí)我的女兒聽到求救的呼喊。 One Friday, we were packing to leave for a weekend away ________ my daughter heard cries for help.,2．下列結(jié)構(gòu)表示“一……就……”： as soon as, immediately, directly, instantly, the moment, the minute, the instant, no sooner.than., hardly/scarcely.when. ③我一聽到那個(gè)聲音就知道父親來了。 ________________ I heard the voice，I knew father was coming. ④他剛完成演講學(xué)生們就開始?xì)g呼起來。 No sooner had he finished his speech ______________ the students started cheering.,3．before (1)表示“還未……就……；不到……就……；……才……；趁……；還沒來得及……就……”。 The girl had hardly rung the bell before the door was opened suddenly, and her friend rushed out to greet her. 小女孩還沒來得及按門鈴，門就突然開了，并且她的朋友沖出來問候她。,(2)It will be＋一段時(shí)間＋before.“多久之后才……”。 It is＋一段時(shí)間＋since.“自從……多久了”。 ⑤ 據(jù)報(bào)道，自清華大學(xué)建立以來已有一百多年了。 As is reported, it is over 100 years ________ Qinghua University was founded. ⑥還得再過半年我才能回來。 It will be half a year ____________ I come back.,4．by the time by the time 表示“到……的時(shí)候”。當(dāng)從句是時(shí)間狀語從句時(shí)，主句要用完成時(shí)。 ⑦當(dāng)你回來的時(shí)候，我們將已完成這項(xiàng)工作。 By the time you come back, we ________________. ⑧我們到的時(shí)候，他已經(jīng)種了10棵樹了。 He ________________by the time we arrived. 答案 ①was about to close the window ②when ③The moment ④than ⑤since ⑥before ⑦will have finished the job ⑧had planted 10 trees,三、條件狀語從句 條件狀語從句的常用連詞有if, unless, as/so long as(只要), only if(位于句首主句要倒裝), in case, on condition that等。 ①(2013·江西卷)她說她將不得不關(guān)掉商店，除非生意好轉(zhuǎn)。 She says that she'll have to close the shop ________ business improves.,② 只要一個(gè)人給別人的生活帶來價(jià)值，那么他的生命就有價(jià)值。 One's life has value ________ one brings value to the life of others. ③ 學(xué)生一旦決定上哪所大學(xué)，他們就應(yīng)該了解一下入學(xué)手續(xù)。 ________ they decide which college to go to, students should research the admission procedures. 答案 ①unless ②as long as ③Once,1．【誤】 In such dry weather，the flowers will have to be watered if they are going to survive. 【正】 In such dry weather，the flowers will have to be watered if they are to survive. 解析 if 從句中不能用表示將來的 will，be going to 等，但可以使用if sb/sth is to do sth 結(jié)構(gòu)。,[考 點(diǎn) 警 示],2．【誤】 You will be late unless you will leave immediately. 【正】 You will be late unless you leave immediately. 解析 時(shí)間、條件、讓步、方式等狀語從句中，用一般現(xiàn)在時(shí)表示將來時(shí)。 3．【誤】 Mum would not let him buy it，as if he had enough money ! 【正】 Mum would not let him buy it，even if he had enough money! 解析 從前后兩個(gè)句子之間的邏輯關(guān)系可知，應(yīng)用 even if 。even if 即使；as if 好像。,4．【誤】 Not until I began to work I realized how much time I had wasted. 【正】 Not until I began to work did I realize how much time I had wasted. 解析 not until.置于句首時(shí)，主句應(yīng)使用部分倒裝結(jié)構(gòu)。 5．【誤】 I won't agree with no matter what you may say. 【正】 I won't agree with whatever you may say. 【正】 Whatever /No matter what you may say，I won't agree. 解析 whatever 引導(dǎo)的從句作 agree with 的賓語，即作賓語從句，whatever 不能與 no matter what 替換。而引導(dǎo)狀語從句時(shí)可替換。,一、as引導(dǎo)的讓步狀語從句與 although引導(dǎo)的讓步狀語從句的比較 although引導(dǎo)讓步主語從句句子為正常語序，而as引導(dǎo)讓步狀語從句用倒裝。 盡管有規(guī)律的鍛煉是很重要的，但是在臨近就寢的時(shí)候進(jìn)行鍛煉絕不是一個(gè)好主意。 ________ regular exercise is very important, it's never a good idea to exercise too close to bedtime. 答案 Although,[易 錯(cuò) 防 范],二、時(shí)間狀語從句中since與before的比較 since引導(dǎo)時(shí)間狀語從句表示“自從……以來”，主句常用完成時(shí)；before表示“在……之前；還未……就……；還未來得及……就……”等，常構(gòu)成句式：It was not long before.，It will be some time before.等。試比較： ①He hung up ________ I could explain what had happened. ②It is three years ________ he came to work in our school. ③It will be two weeks ________they finish the work. ④(2013·陜西卷)I have heard a lot of good things about you ________ I came back from abroad. 答案 ①before ②since ③before ④since,