This rate depends on the relative strengths of the signal and noise travelling down the communication channel, and on its capacity .
问题1:第一个and并列的成分是哪两个?
问题2:travelling down the communication channel是什么成分?是现在分词作状语吗?还是作定语修饰noise/the signal and noise?如何区分后置的非谓语动词作定语还是状语?
问题3:第二个and和谁并列?为啥要有逗号?
1.the signal and the noise
2.travelling down the communication channel 为现在分词部分做后置定语,修饰the signal and noise 如果是状语要修饰谓语动词,通常会用逗号分开或by 连接, 即by travelling down...
3. on the relative strengths of the signal and noise travelling down the communication channel, 并列,即两个on 引导的部分。用逗号是因为第一个on后面的部分太长,需要停顿。
如果觉得我的回答对您有用,请随意打赏。你的支持将鼓励我继续创作!