Almost immediately he began to complain about the weather, for even though it was still summer, it rained continually and it was often bitterly cold.现在自己知道even though it was still summer是让步状语从句,it rained continually and it was often bitterly cold.是这个让步状语的主句。但Almost immediately he began to complain about the weather,算啥,算整个句子的主句 然后for 引导原因状语从句?完全不同这句子的层次。