Question

这2个英语句子是什么结构？

是什么从句

Although the centers look normal, they are expected to bring in at least $320 million in local taxes for Loudoun County。

Back-up generators are in place so that power never runs out.

Answer 1

第一句中Although the centers look normal是让步状语从句，其中Although是从属连词引起状语从句，the centers 主语, look 系动词谓语，normal 表语。

第二句话中so that power never runs out是结果状语从句。其中so that 是连词，power 主语， runs out 谓语。