no sooner ..than 请高人指教,
no sooner +主句.than +从句,就是这样规定的吗,比如说1,no sooner had i finished eating than someone asked me on the phone .2.,No sooner were the picnic baskets unpacked than it began to rain .这些句子从汉语上看怎么区别主从句啊,貌似看不出来呀,还有例句2,不是说no sooner 后面应该加过去完成时吗,用were