No sooner ( )one task than she was asked to do another.a:she

BNo sooner。than 。"一。。。就。。。" 引导时间状语从句,主句用过去完成时,"than"后面的从句用一般过去时。No sooner 。。。than。。。常放在句首,表示强调。这时主句要倒装。例:No sooner had I reached home than it began to rain。）