scarcely A when [or before] B (conj.) A ... B 就 ... , A 要做而未做时 B就... (1)把 scarcely 放在句首要用倒装语序。(2)A 用过去完成时,B 用过去式为多。(3)口语中用 as soon as / Scarcely hsd he gone out [ or He has scarcely gone out] when [or before] it began to rain. 他刚要出门就下起雨来了。(摘自《英汉多功能词典》新编升级版p.1492)