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根據(jù)句意可知選B。考查連詞。50.—We can’t be successful ________ we keep working hard. —I agree with you.A.if B.unless C.because D.when【答案】B【解析】【詳解】句意:——除非我們堅持努力工作,我們不能成功。(引導時間狀語從句);B. 在……之后(引導時間狀語從句);……時候(引導時間狀語從句);(引導時間狀語從句)?!?9.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,當你遛狗時記得給狗拴上鏈子。(引導條件狀語從句);(表示并列);(引導條件狀語從句)。and和;until直到;or或者、否則,but但是。句意:—會議已經(jīng)開始了嗎?—不,還沒有。短語not ...until...意為“直到......才......”,故選D??疾檫B詞辨析。toldheraboutknowdidn39。根據(jù)句意可知,譯為“只要他們好”,引導條件狀語從句,故選A。45.- What’s your opinion about friends?- They are like books. We don’t need a lot of them they’re good.A.a(chǎn)s long as B.a(chǎn)s soon as C.so that D.a(chǎn)s if【答案】A【解析】【詳解】句意“關于朋友,你的觀點是什么?他們像書,只要他們好,我們不需要太多”。A. unless除非;B. so that以便;C. because因為;D. so long as只要。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:——真是一團糟!共享自行車到處都是。until 直到……才;if 如果;because 因為;since 自從,既然。考查連詞辨析,as if好像,even though盡管,as long as只要,as far as據(jù)……,根據(jù)句意,﹣﹣朋友就像書籍.﹣﹣是的,我們不需要太多只要他們品質(zhì)好.故選C.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:海倫對我粗魯,我拒絕跟她再次說話,直到她向我道歉為止。t need lots of them they are good.A.a(chǎn)s if B.even thoughC.a(chǎn)s long as D.a(chǎn)s far as【答案】C【解析】【詳解】句意:—朋友像書籍。根據(jù)題意,故選C。第一空是if引導的條件狀語從句,從句用一般現(xiàn)在時態(tài),主語是it,這里be動詞用is。 rains【答案】C【解析】【詳解】句意:——如果這個星期天天氣好,我們?nèi)ヒ安桶伞?rains C.is fine。41.—Let’s have a piic if it ________ this Sunday.—But nobody knows if it ________ on that day.A.will be fine。前面意思是“他得掙好多錢”,后面意思是“他能夠給孩子們買好吃的和衣服”。當主句描述將來動作時,英語條件狀語從句中用一般現(xiàn)在時態(tài)表示將來的動作;主語單三,謂語動詞用單數(shù)形式;故選A??键c:考查副詞的用法。care關心,是動詞;careful認真的,是形容詞;more carefully更認真地;carefully認真地?!堑?。 A. unless 除非; B. once 一次;C. since 因為; D. after 在…之后,根據(jù)題意可知此句是unless引導的條件狀語從句,故選A。37.They will lose the game _______ they try their best.A.unless B.once C.since D.a(chǎn)fter【答案】A【解析】【詳解】試題分析:句意:他們會輸?shù)舯荣惖?,除非他們盡自己最大的努力。結(jié)合選項的意思和句意可知,用unless。A. if“如果”;B. unless“除非;如果不”;C. until“直到”;D. since“自從;既然”。故選A。A. even though盡管,即使,引導讓步狀語從句;B. since意為“自從”,引導時間狀語從句;意為“既然”,引導原因狀語從句;C. unless除非,如果不,引導條件狀語從句。由句意可知選D。句意:直到每個人都到了我們才開始討論??键c:考查連詞。此題考查連詞,A如果不;B盡管;C如果;D在之后。33.Pandas are facing danger!The situation won’t change humans stop killing.A.unless B.though C.if D.a(chǎn)fter【答案】A【解析】試題分析:句意:熊貓面臨危險。A. until直到……; B. after在……之后;C. before在……之前;D. unless除非,rush into沖進,根據(jù)對句子的分析,可知在我能夠阻止她之前,她沖進了雨中,故選擇C。故選C。when 當……時候;if如果;though盡管。故選C。30. Tom failed in the exam ag ain ______ he tried his best.A.if B.unless C.though