【正文】 rains【答案】C【解析】【詳解】句意：——如果這個(gè)星期天天氣好，我們?nèi)ヒ安桶??！珱](méi)人知道那天會(huì)不會(huì)下雨。第一空是if引導(dǎo)的條件狀語(yǔ)從句，從句用一般現(xiàn)在時(shí)態(tài)，主語(yǔ)是it，這里be動(dòng)詞用is。排除AB；第二空是if引導(dǎo)的賓語(yǔ)從句，根據(jù)語(yǔ)境可知用一般將來(lái)時(shí)，其結(jié)構(gòu)是will{動(dòng)詞原形。根據(jù)題意，故選C。41．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。42．— What were you doing ______ I knocked at the door?— I was sleeping.A．unless B．onceC．when D．while【答案】C【解析】【詳解】試題分析：句意：－我敲門(mén)時(shí)，你在做什么？－我在睡覺(jué)。A．unless如果不，除非；引導(dǎo)條件狀語(yǔ)從句；B．once一旦……，引導(dǎo)條件狀語(yǔ)從句；C．when當(dāng)……時(shí)，表示兩個(gè)動(dòng)作同時(shí)發(fā)生，主句一般使用過(guò)去時(shí)，從句使用過(guò)去進(jìn)行時(shí)；D．while當(dāng)……時(shí)，表示兩個(gè)動(dòng)作同時(shí)發(fā)生，后跟延續(xù)性動(dòng)詞，從句一般使用進(jìn)行時(shí)態(tài)，表示一段時(shí)間。本題表示“當(dāng)……時(shí)”，knock是非延續(xù)性動(dòng)詞，故選C?？键c(diǎn)：考查連詞辨析。43．Helen was very rude to me. I refuse to speak to her again __________ she says sorry.A．until B．if C．because D．since【答案】A【解析】【詳解】句意：海倫對(duì)我粗魯，我拒絕跟她再次說(shuō)話，直到她向我道歉為止?？疾檫B詞辨析。until 直到……才；if 如果；because 因?yàn)?；since 自從，既然。結(jié)合句意可知，此句是until引導(dǎo)的時(shí)間狀語(yǔ)從句，故答案選A。44．What a mess! The sharing bikes are thrown everywhere.Let’s collect and put them in the right place they can be used conveniently.A．unless B．so that C．because D．so long as【答案】B【解析】句意：——真是一團(tuán)糟！共享自行車(chē)到處都是?！屛覀儼阉鼈兪占饋?lái)放在合適的地方，這樣它們就可以方便地使用了。A. unless除非；B. so that以便；C. because因?yàn)椋籇. so long as只要。結(jié)合句意可知，此處是so that引導(dǎo)的目的狀語(yǔ)從句，答案為B。45．He didn’t go to school yesterday _______ he was ill.A．because B．because of C．if D．so【答案】A【解析】【詳解】句意：他昨天沒(méi)去上學(xué)，因?yàn)樗×?。本題的含義是昨天他沒(méi)有去上學(xué)，“他病了”應(yīng)該是他沒(méi)上學(xué)的原因，because后跟原因從句，because of后跟單詞或短語(yǔ)，if如果后接條件狀語(yǔ)從句，so因此。故選A。46．My family always go somewhere interesting the holiday begins.A．a(chǎn)s soon as B．soC．so that D．even though【答案】A【解析】試題分析：句意：一放假，我們家總是去一些有趣的地方。A. as soon as一……就……。表示時(shí)間；B. so因此。表示結(jié)果；C. so that 以便，為了，表示目的；D. even though盡管，即使，表示條件。假期開(kāi)始，指時(shí)間，用as soon as：一放假就去參觀有趣的地方。故選A?？键c(diǎn)：考查連詞辨析。47．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。48．Wedidn39。tcutthecake______Amymadeawish． A．because B．until C．if【答案】B【解析】【詳解】句意：直到艾米許了愿，我們才切蛋糕。A. because因?yàn)?；B. until直到；C. if如果。didn’t是did not的縮寫(xiě)。not until直到……才。結(jié)合句意可知，答案為B。49．I’m afraid ebooks might be bad for our eyes.Hmm, but they will be helpful for us_________we put them to good use.A．a(chǎn)s soon as B．a(chǎn)s long as C．even though D．so that【答案】B【解析】【詳解】句意“恐怕電子書(shū)對(duì)我們的眼睛有害。但是只要我們合理使用他們，他們就對(duì)我們有幫助”?！汀ㄒ龑?dǎo)時(shí)間狀語(yǔ)從句）；（引導(dǎo)條件狀語(yǔ)從句）；（引導(dǎo)讓步狀語(yǔ)從句）；，為的是（引導(dǎo)目的狀語(yǔ)從句）。根據(jù)句意可知，譯為“只要我們合理使用他們”，表示條件，故選B。50．—I’m busy with my schoolwork these days.—That’s great! You won’t get good grades ______ you work hard.A．if B．becauseC．unless D．a(chǎn)fter【答案】C【解析】試題分析：句意：這些天我忙著學(xué)校工作。那太好了，除非你努力工作，否則你不會(huì)取得好成績(jī)。A. if如果； B. because因?yàn)椋?C. unless除非； D. after在……之后，根據(jù)句意此題選C?？键c(diǎn)：考查連詞的用法