【正文】 s lives since it was put into use.A．is saving B．will save C．has saved D．had saved【答案】C【解析】句意：這種藥物自從投入使用以來已經(jīng)挽救了數(shù)百萬人的生命。since后跟從句，表示“自……以來”，說明的是現(xiàn)在的狀況,判斷用現(xiàn)在完成時(shí)態(tài)，故答案為C。44．—Linda is not ing for the party tonight. —But she _.A．promises B．promised C．will promise D．had promised【答案】B【解析】【詳解】句意：琳達(dá)今晚不來參加晚會了嗎？但她答應(yīng)了?？疾閯?dòng)詞時(shí)態(tài)。A. promises一般現(xiàn)在時(shí)，第三人稱單數(shù)；B. promised一般過去時(shí)；C. will promise一般將來時(shí)；D. had promised過去完成時(shí)。根據(jù)上文是現(xiàn)在進(jìn)行時(shí)，結(jié)合語境可知原先答應(yīng)，可知用一般過去時(shí)。故選B。45．When it began to rain heavily, she ________ for a bus at the bus stop.A．waited B．waits C．is waiting D．was waiting【答案】D【解析】句意：當(dāng)雨下得很大時(shí)，她正在公共汽車站等公共汽車。A. waited一般過去時(shí)；B. waits一般現(xiàn)在時(shí)；C. is waiting現(xiàn)在進(jìn)行時(shí)；D. was waiting過去進(jìn)行時(shí)。when引導(dǎo)的時(shí)間狀語從句，從句用一般過去時(shí)，主句用過去進(jìn)行時(shí)；故選D。46．The boy ______ for her in the rain for nearly half an hour before she appeared.A．waits B．waited C．has waited D．had waited【答案】D【解析】句意：在她出現(xiàn)前，那個(gè)男孩已經(jīng)在雨中等了接近半個(gè)小時(shí)了。因?yàn)閎efore后用的是一般過去時(shí)，wait這個(gè)動(dòng)作發(fā)生在appeared之前，也就是過去的過去，所以空格處應(yīng)該用過去完成時(shí)。故選D。47．—Where is Mrs. Wu? —She _______ the countryside to be a volunteer teacher. She will stay there for a year.A．has been to B．came to C．has gone to D．has e to【答案】A【解析】【詳解】句意：——吳太太在哪里？——她到農(nóng)村去當(dāng)一名志愿者教師。她將在那里呆一年?？疾楝F(xiàn)在完成時(shí)態(tài)。go去，e來；都是短暫形動(dòng)詞；e與句意不合，可排除BD兩項(xiàng)。has been to 曾經(jīng)去過某地，現(xiàn)在已經(jīng)回來了；has gone to 曾經(jīng)去過某地，到現(xiàn)在還沒有回來。根據(jù)She will stay there for a year.，可知選A。48．I’ll ring you up as soon as he .A．a(chǎn)rrive B．a(chǎn)rrives C．will arrive D．a(chǎn)rrived【答案】B【解析】句意：他一到我就給你打電話。在as soon as引導(dǎo)的時(shí)間狀語從句中，當(dāng)主句是將來時(shí)的時(shí)候，從句用一般現(xiàn)在時(shí)表示將來。he為單數(shù)，所以謂語用第三人稱單數(shù)。故選B。49．I didn39。t see you at Olympic Sports Centre this morning. What happened? Sorry, I the exchange students around our school then.A．showed B．was showing C．a(chǎn)m showing D．will show【答案】B【解析】句意：——今天早上我在奧運(yùn)會體育中心沒有看見你。發(fā)生了什么？——對不起，我那時(shí)正領(lǐng)著交換生參觀我們學(xué)校。根據(jù)時(shí)間副詞then可知此處用過去進(jìn)行時(shí)，故選B。50．—Mum, I want to watch Everlasting Classics on CCTV 1 tonight.—Oh, dear, it for nearly twenty minutes. Come on!A．will begin B．will be on C．has begun D．has been on【答案】D【解析】【詳解】句意：——媽媽，今晚我想在中央電視臺1臺看《永恒的經(jīng)典》?！?，天哪，已經(jīng)開演了將近二十分鐘了。加油！根據(jù)語境for a few minutes（幾分鐘）和e on，可知節(jié)目已經(jīng)進(jìn)行了幾分鐘并且現(xiàn)在還在演，故應(yīng)用動(dòng)詞的現(xiàn)在完成時(shí)態(tài)（基本結(jié)構(gòu)：主語+have/has+動(dòng)詞的過去分詞）．故可排除A和B；又由于begin是非延續(xù)性動(dòng)詞不能和for a few minutes搭配，而has been on（表示持續(xù)性的狀態(tài)）故選D。51．—When did the classroom have a power cut?—This morning. While we ______ an English lesson.A．have B．had C．a(chǎn)re having D．were having【答案】D【解析】句意：——教室什么時(shí)候停電的？——今天早上，當(dāng)我們正在上英語課。根據(jù)句中的This morning判斷句子是一個(gè)過去的時(shí)間，時(shí)態(tài)用過去時(shí)；而While引導(dǎo)的句子通常用進(jìn)行時(shí)，所以本句使用過去進(jìn)行時(shí)，構(gòu)成為were/was+動(dòng)詞現(xiàn)在分詞，主語是we，所以系動(dòng)詞用were，have an English lesson“上英語課”，have的現(xiàn)在分詞是having；故答案選D。52．It’s nice to see you again. We ______ each other for a long time.A．didn’t see B．haven’t seen C．won’t see D．didn’t see【答案】B【解析】【詳解】句意：再次見到你很開心，我們已經(jīng)好長時(shí)間沒見了。本題考查的是時(shí)態(tài)，結(jié)合語境，此處指到現(xiàn)在為止有好久沒有見面了，根據(jù)所給空后面的for a long time是現(xiàn)在完成時(shí)的標(biāo)志詞可知，應(yīng)該用現(xiàn)在完成時(shí)，故答案選B。53．Since the shop_____down, all the Tshirts are sold at half price.A．has closed B．closed C．is closing D．will be closed【答案】C【解析】句意：由于商店即將倒閉，所有的T恤衫半價(jià)出售。close down停業(yè)，關(guān)閉。此處是現(xiàn)在進(jìn)行時(shí)態(tài)表將來，故答案為C。54．Did you hear someone knocking at the door just now, Tom?No, I _______ TV with my friend in my bedroom.A．was watching B．watched C．a(chǎn)m watching D．watch【答案】A【解析】【詳解】句意：——湯姆，你剛才聽到有人敲門了嗎？——沒有，我和我的朋友正在臥室里看電視?？疾檫^去進(jìn)行時(shí)。A. was watching過去進(jìn)行時(shí)；B. watched一般過去時(shí)；C. am watching現(xiàn)在進(jìn)行時(shí)；D. watch觀看，動(dòng)詞原形。根據(jù)句意“——湯姆，你剛才聽到有人敲門了嗎？——沒有，我和我的朋友正在臥室里看電視?！?可推知?jiǎng)偛庞腥饲瞄T時(shí)我和我的朋友正在臥室里看電視。所以該句強(qiáng)調(diào)的是過去某個(gè)時(shí)間正在進(jìn)行和發(fā)生的動(dòng)作，確定時(shí)態(tài)為過去進(jìn)行時(shí)態(tài)，其構(gòu)成為was/were＋現(xiàn)在分詞，根據(jù)主語是I，故助動(dòng)詞用was，watch的現(xiàn)在分詞為watching，故填was watching，故答案選A。55．Not only Tom but also his brother ________the Greener China for two years.A．has bee a member ofB．has been inC．have been a member of【答案】B【解析】句意：不僅湯姆還有他弟弟參加盧瑟中國2年了。根據(jù)for two ，所以排除A；根據(jù)not onlybut also連接句子兩個(gè)主語時(shí)，謂語動(dòng)詞就進(jìn)原則；故選B56．Sally _______ reading the novel. She will return it in the afternoon.A．finish B．finishes C．has finished D．is finishing【答案】C【解析】【詳解】句意：莎莉已讀完小說了。她下午還。A. finish動(dòng)詞原形； B. finishes一般現(xiàn)在時(shí)態(tài)的第三人稱單數(shù)形式； C. has finished 現(xiàn)在完成時(shí)態(tài)的第三人稱單數(shù)形式；D. is finishing現(xiàn)在進(jìn)行時(shí)態(tài)的第三人稱單數(shù)形式。根據(jù)下句She will return it in the afternoon. 她下午還?？芍呀?jīng)讀完了，故用現(xiàn)在完成時(shí)態(tài)，故選C。57． Do you know ________ this afternoon? I39。m not sure, but I39。ll tell you as soon as she_________.A．how will Betty arrive。 starts B．how Betty will arrive。 will startC．what time will Betty arrive。 will start D．what time Betty will arrive。 starts【答案】D【解析】試題分析：句意： 你知道貝蒂今天下午幾點(diǎn)到嗎嗎？ 我不知道，但她一出發(fā)我就盡快告訴你。在賓語從句中只能用陳述句語序，可根據(jù)表達(dá)需要選用動(dòng)詞時(shí)態(tài)。但在含有時(shí)間狀語從句的主從復(fù)合句中要遵循主將從現(xiàn)的原則。所以選D。考點(diǎn)：考查從句中的動(dòng)詞時(shí)態(tài)。58．If you fail in the exam， you ________ him down．A．would let B．lets C．will let D．let【答案】C【解析】句意：如果你考試不及格，你就會讓他失望的。would let是過去將來時(shí)；lets一般現(xiàn)在時(shí)；will let一般將來時(shí)；let讓，動(dòng)詞原形。let sb. down讓某人失望，是一個(gè)固定短語。句中If引導(dǎo)的是條件狀語從句，從句中用一般現(xiàn)在時(shí)態(tài)，主句應(yīng)用一般將來時(shí)態(tài)，故選C。59．—Do you know Diaoyu Island?—Sure. It China since ancient times.A．belong to B．belonged to C．is belonging to D．has belonged to【答案】D【解析】【詳解】句意：你知道釣魚島嗎？ 當(dāng)然知道。它從古代就屬于中國。“屬于”是belong to, 看到since, 說明是現(xiàn)在完成時(shí)，結(jié)構(gòu)：主語+have/has +過去分詞，主語是it, 所以填has belonged to, 故選D。60．— Mike, I haven’t seen your elder sister for a long time. — She ______ Hong Kong on business for a few days.A．went to B．has gone to C．has been to D．has been in【答案】D【解析】句意：——邁克，我好久沒見到你姐姐了?！呀?jīng)在香港出差幾天了。根據(jù) for a few days可知，這些天一直在香港，表示從過去的時(shí)間一直延續(xù)到現(xiàn)在，應(yīng)用現(xiàn)在完成時(shí)；又根據(jù)has been to去過和has gone to去過都不能與時(shí)間段連用可知，應(yīng)排除BC；要表示在哪里呆多長時(shí)間應(yīng)用延續(xù)性動(dòng)詞短語 be in表狀態(tài)，故答案選D。