【正文】
的優(yōu)點是什么?——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.(題文)— Did you win the game yesterday?— Not really. ______we all tried our best, we lost it.A.If B.Though C.Unless【答案】B【解析】試題分析:句意:你昨天贏了比賽了嗎?沒有,我們都盡了最大努力,但是還是輸了比賽。A.If如果; B.Though雖然,盡管; C.Unless除非。根據(jù)句意故選B??键c:考查連詞辨析。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的結構,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)舯荣惖模撬麄儽M自己最大的努力。lose the game 輸?shù)舯荣?,try one’s best 盡最大的努力。 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。28.Our head teacher often says, "You will not pass the exam ___________ you work hard."A.if B.unless C.since D.when【答案】B【解析】句意:我們的班主任常說:如果你們不努力學習,你們就通不過考試。If如果,引導條件狀語從句;unless除非,引導條件狀語從句;since自從,因為,引導時間狀語從句;when當……時候,引導時間狀語從句;條件狀語從句用一般現(xiàn)在時表示一般將來時,主句用一般將來時,根據(jù)題中的時態(tài)和句意,如果不努力,就通不過考試,故此處用unless。故選B。29.It has been much easier for me to go to work________ shared bikes appeared.But they also caused plenty of problems.A.since B.before C.unless D.though【答案】A【解析】句意:——自從共用自行車出現(xiàn)以來,我就更容易去上班了。——但它們也造成了很多問題??疾檫B詞辨析題。A. since自從……,后接時間名詞或從句,表一段時間,用于現(xiàn)在完成時;B. before在……以前,表時間;C. unless除非,表條件;D. though盡管,表讓步。本句是時間狀語從句,可排除CD兩項。根據(jù)句意結構和語境,可知before不合句意,故選A。30. 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,杰夫認為時間和金錢都值得。A. As當……的時候;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。根據(jù)題意,故選D。