【正文】 while后面的從句時(shí)態(tài)用現(xiàn)在進(jìn)行時(shí)。故選B。40．Chen Wei isn’t at school today ________ he is taking a robot petition in Shanghai.A．so B．because C．before D．if【答案】B【解析】試題分析：句意：陳煒今天不在學(xué)校因?yàn)樗谏虾⒓訖C(jī)器人競(jìng)賽。so所以；because因?yàn)?；before在……之前；if如果。所以選B?？键c(diǎn)：考查連詞。41．—Betty, do you know if Tony ______ the photo petition?—He will, if he ______ his project on Australia.A．enters。 finishes B．enters。 will finishC．will enter。 finishes D．will enter。 will finish【答案】C【解析】【詳解】句意：貝蒂，你知道托尼是否要參加攝影比賽？他會(huì)的，如果他完成了有關(guān)澳大利亞的課題。問(wèn)句中if引導(dǎo)的是賓語(yǔ)從句，翻譯為是否，前者問(wèn)的是將來(lái)；答語(yǔ)是由if引導(dǎo)的條件狀語(yǔ)從句，所以遵循主將從現(xiàn)的原則，所以if之后用一般現(xiàn)在時(shí)。所以答案選C。42． the journey was tiring，Jeff thought it was worth both the time and the money.A．As B．Since C．Unless D．Although【答案】D【解析】【詳解】句意：雖然旅途很累，杰夫認(rèn)為時(shí)間和金錢都值得。A. As當(dāng)……的時(shí)候；B. Since 自從；C. Unless除非；D. Although盡管。根據(jù)下文Jeff thought it was worth both the time and the ，這里用Although引導(dǎo)。根據(jù)題意，故選D。43．______ many children like KFC, I think they’d better try not to eat it too often.A．Because B．When C．Although D．If【答案】C【解析】考查從句的知識(shí)。句意“盡管很多孩子喜歡吃KFC，單數(shù)我認(rèn)為他們最好不要經(jīng)常吃?！眀ecause引導(dǎo)原因狀語(yǔ)從句；when引導(dǎo)時(shí)間狀語(yǔ)從句；although引導(dǎo)讓步狀語(yǔ)從句；if引導(dǎo)條件狀語(yǔ)從句。題目表示的是讓步。故選C。44．He was so busy preparing for the high school entrance exam that .A．he had enough time to watch football matches every dayB．he was free enough to go shopping onlineC．he had no time to do sports every day【答案】C【解析】【詳解】句意：他忙于準(zhǔn)備高中入學(xué)考試，以至于他每天都沒(méi)有時(shí)間做運(yùn)動(dòng)?？疾榻Y(jié)果狀語(yǔ)從句。A. 他每天有足夠的時(shí)間看足球比賽；B. 他有足夠的時(shí)間去網(wǎng)上購(gòu)物；。本句是“so…that”結(jié)構(gòu)，表示“如此……以至于……”，引導(dǎo)結(jié)果狀語(yǔ)從句；根據(jù)“He was so busy preparing for the high school entrance exam”可知沒(méi)有時(shí)間娛樂(lè)、購(gòu)物或做運(yùn)動(dòng)，A、B兩項(xiàng)不合句意，故選C。45．She didn39。t leave the school __________ she worked out this problem.A．a(chǎn)s long as B．until C．since D．while【答案】B【解析】【詳解】句意“直到她解決了這個(gè)問(wèn)題他才離開(kāi)學(xué)?！?。（引導(dǎo)條件狀語(yǔ)從句）；（引導(dǎo)時(shí)間狀語(yǔ)從句）；（引導(dǎo)時(shí)間狀語(yǔ)從句）；……時(shí)候（引導(dǎo)時(shí)間狀語(yǔ)從句）。根據(jù)句意可知，譯為“直到他解決這個(gè)問(wèn)題他才離開(kāi)學(xué)校”。not...until...直到……才，故選B。46．Let39。s go climbing Langshan Mountain this Saturday __________ the weather is fine.Good idea!A．though B．if C．unless【答案】B【解析】【詳解】句意“如果天氣好，周六我們?nèi)ヅ缻~山吧。好主意”。（引導(dǎo)讓步狀語(yǔ)從句）；（引導(dǎo)條件狀語(yǔ)從句）；（引導(dǎo)條件狀語(yǔ)從句）。根據(jù)句意可知，譯為“如果天氣好”，表示條件，故選B。47．The environment will be much worse ___________ everyone has a sense of protecting it.A．unless B．if C．so that【答案】A【解析】【詳解】句意：除非每個(gè)人都有保護(hù)環(huán)境的意識(shí)，否則環(huán)境會(huì)更糟。考查連詞辨析。unless除非，表?xiàng)l件，相當(dāng)于if not；if如果，表?xiàng)l件；so that以便于，表目的。本句是條件狀語(yǔ)從句，根據(jù)句意語(yǔ)境，可知if不合句意，故選A。48．If you study hard, you ________ into a good senior high school.A．got B．will get C．get【答案】B【解析】【詳解】考查條件狀語(yǔ)從句時(shí)態(tài)的用法。句意：如果你努力學(xué)習(xí)，你_______進(jìn)入一個(gè)好點(diǎn)的高中。A. got 表示一般過(guò)去時(shí)；B. will get 是一般將來(lái)時(shí)；C. get 是一般現(xiàn)在時(shí)。連詞if引導(dǎo)的條件狀語(yǔ)從句中，主句是一般將來(lái)時(shí)，條件狀語(yǔ)從句用一般現(xiàn)在時(shí)表示將來(lái)的動(dòng)作。由句意可知，主句是將來(lái)發(fā)生的動(dòng)作，用一般將來(lái)時(shí)，故選B。49．Remember to keep the dog on a leash （狗鏈）________ you walk it, honey!Sure. I won’t let it hurt others.A．until B．a(chǎn)fter C．while D．since【答案】C【解析】【詳解】句意“寶貝，當(dāng)你遛狗時(shí)記得給狗拴上鏈子。好的，我不會(huì)讓他傷害其他人”?！牛ㄒ龑?dǎo)時(shí)間狀語(yǔ)從句）；B. 在……之后（引導(dǎo)時(shí)間狀語(yǔ)從句）；……時(shí)候（引導(dǎo)時(shí)間狀語(yǔ)從句）；（引導(dǎo)時(shí)間狀語(yǔ)從句）。根據(jù)句意可知，譯為“當(dāng)遛狗時(shí)”，故選C。50． has a habit of taking a shower _________ he has breakfast.A．though B．before C．because D．since【答案】B【解析】試題分析：句意：史密斯先生有在吃早飯前洗澡的習(xí)慣。though雖然，盡管，引導(dǎo)讓步狀語(yǔ)從句； ……之前，引導(dǎo)時(shí)間狀語(yǔ)從句； 因?yàn)椋龑?dǎo)原因狀語(yǔ)從句；……，引導(dǎo)時(shí)間狀語(yǔ)從句。根據(jù)句意，故選B。【考點(diǎn)定位】考查連詞的用法。