【正文】
示結(jié)果引導(dǎo)結(jié)果狀語從句,與本題的含義相符;而for表示目的為了或表示原因因?yàn)榈暮x;or表示結(jié)果否則的含義,as表示作為或當(dāng)……時候的含義,后三者與本題的含義不符,故本題選C。24.—Susan,what are the advantages of MP5 players?—Mom,they are smaller and lighter________they can be carried very easily.A.unlessB.ifC.untilD.so that【答案】D【解析】【詳解】句意:——Susan,MP5播放器的優(yōu)點(diǎn)是什么?——媽媽,他們更小、更輕,為的是方便攜帶。so that“為的是,以便”,表示目的;unless“除非”;if“如果”;until“直到”。由句意可知選D。25.To make your DIY work perfect, you’d better not start ___________ you get all the tools ready.A.when B.while C.before D.a(chǎn)fter【答案】C【解析】【詳解】句意:為了讓你的DIY作品完美,你最好在你把所有的工具都準(zhǔn)備好前不要開始。When當(dāng)……的時候;while當(dāng)……的時候;before 在……之前; after在……之后。所以選C。26.—Tom, you look tired this morning. What’s wrong?—I was so busy that I didn’t go to bed _____ 12 o’clock last night.A.until B.when C.though D.unless【答案】A【解析】本題符合notuntil的結(jié)構(gòu),表示直到才,故選答案為A27.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。lose the game 輸?shù)舯荣悾瑃ry one’s best 盡最大的努力。 A. unless 除非; B. once 一次;C. since 因?yàn)椋?D. after 在…之后,根據(jù)題意可知此句是unless引導(dǎo)的條件狀語從句,故選A。28.“A white elephant” means something that is useless, ___________ it may cost a lot of money.A.unless B.until C.since D.a(chǎn)lthough【答案】D【解析】【詳解】句意:“白象”指的是無用的東西,盡管它可能要花很多錢。考查連詞辨析。A. unless除非,引導(dǎo)條件狀語從句;B. until直到……才……,引導(dǎo)時間狀語從句;C. since由于,引導(dǎo)原因狀語從句;D. although盡管,引導(dǎo)讓步狀語從句。根據(jù)句意,本句是讓步狀語從句,故選D。29.Henry will give us a report as soon as he _______.A.a(chǎn)rrives B.a(chǎn)rrived C.is arriving D.will arrive【答案】A【解析】【詳解】句意:亨利一到,他就要給我們做一個報告。當(dāng)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。30.I didn’t believe I could do it ____ I got to the top of Mount Tai.A.unless B.until C.a(chǎn)fter D.a(chǎn)s【答案】B【解析】試題分析:句意:直到我到達(dá)泰山頂上我才相信我能成功。A. unless如果不,除非,引導(dǎo)條件狀語從句; B. until 直到,引導(dǎo)時間狀語從句; C. after 在……后,引導(dǎo)時間狀語從句; D. as因?yàn)?,由于,引?dǎo)原因狀語從句。not …until直到……才,結(jié)合句意,故選B。考點(diǎn):考查連詞的用法。