原文:A Smart Battery signals the SMBus Host that it has detected an
unrecoverable error by taking advantage of the SMBus requirement that an
acknowledge bit must be sent by the slave after every byte is transferred.
一个完整的句子S+V+O(A smart battery signals the SMBus host)
后面的that应该是补语吧?
那第二个that又是什么呢?补语应该从that it has....到....SMBus requirement而已吧?

这文章的用法好奇怪。应该是signal sb to do sth，可是这里却是signal sb sth(用名词子句的形式)。应该是take advantage of sth (to do sth)，可是这里却是take advantage of sth sth(用名词子句的形式)。还是有请其他高手解答...orz

http://www.learnersdictionary.com/definition/signal2 signal verb -> 2 ... 第二部份 第一个例句这类似"tell"的用法

谢谢d大，想请问第二个that也是同一个用法吗?所以第一个that后面的it是指Smart battery囉?