Look out when crossing the road, _____ you may be hit by a car.
A.orB.a(chǎn)ndC.soD.but
A

試題分析:考查固定句式。固定句式:祈使句+連詞+陳述句;該句型就相當(dāng)于一個條件句。如果轉(zhuǎn)換成的條件句表示否定的意思,原句就要使用or;如果轉(zhuǎn)換的條件句表示肯定的意思,原句就使用and;本句="If" you don’t look out when crossing the road, you may be hit by a car.故A正確。
點評:固定句式祈使句+連詞+陳述句;該句型就相當(dāng)于一個條件句。如果轉(zhuǎn)換成的條件句表示否定的意思,原句就要使用or;如果轉(zhuǎn)換的條件句表示肯定的意思,原句就使用and;
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