Food supplies in the flood-stricken area _______. We must act immediately before there’s none left.
A.have run outB.have been run outC.a(chǎn)re running outD.a(chǎn)re being run out
C

試題分析:句意:在洪水的重災(zāi)區(qū)供應(yīng)的食物快用完了,在用完之前我們必須立刻采取措施。are running out表示將要用完,run out不能用被動(dòng)形式。故排除BD;選項(xiàng)A表示已經(jīng)用完,不符合語(yǔ)意,故選C。
點(diǎn)評(píng):本題難度適中。動(dòng)詞時(shí)態(tài)及語(yǔ)態(tài)是高中階段的重難點(diǎn)之一,高中要求掌握的時(shí)態(tài)需要考生牢記它們的用法,但是時(shí)態(tài)必須要結(jié)合一定的語(yǔ)境才能做出正確的判斷。這里考生容易誤選D。
即學(xué)即練: —Bob has gone to California.
——Oh, can you tell me when he        ?
A. has left    B. left    C. is leaving   D. would leave
解析:B。句意:—Bob已經(jīng)去了加利福尼亞!,你能告訴我他什么時(shí)候離開(kāi)的?”Bob has gone to California,去的動(dòng)作已經(jīng)發(fā)生過(guò),說(shuō)明他離開(kāi)的動(dòng)作發(fā)生在過(guò)去,因此使用一般過(guò)去時(shí)。選B。
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