考研英语阅读难句语法分析－名词性从句1

　　【难句】The console can determine how the controller is moving in space and what it is pointing at, and uses that information to control what is happening on screen.

　　【结构分析】以逗号后and为切入点，得到主句部分的并列平行结构The console can determine , and uses that information to control ，uses与can determine一起作该句的谓语。其中determine的宾语也以and切入，得到how引导的名词性从句how the controller is moving in space和what引导的名词性从句what it is pointing at;在use的宾语补足语to control 中，control的宾语使用了what引导的名词性从句what is happening on screen充当，what在从句中作主语。

　　【参考译文】游戏机能测出手柄的移动轨迹，识别手柄指着屏幕上的什么东西，然后根据得到的信息控制屏幕上的游戏。

　　【难句】If left unchanged, it appears that the time to cash in on digital sales via services like iTunes is starting to evaporate, especially if the music is set to start leaking into the public domain in the country where it was originally produced.

　　【结构分析】本句主干为主系表结构，注意appear在这里是系动词用法。表语部分由that引导的名词性从句that the time is starting to evaporate 充当，不定式短语to cash in on digital sales via services like iTunes 作后置定语修饰the time。especially直到句末是条件状语从句，使用了被动语态 if the music is set to 句末关系副词where引导的定语从句where it was originally produced修饰先行词the country，关系副词在从句中作状语，相当于in which。句首部分If left unchanged，我们可以理解为是分词结构作的条件状语，注意这里使用了leave sth.+adj。用法。

　　【参考译文】如果不改变，则通过诸如iTunes利用数字销售赚钱的时代可能开始消亡了，尤其是当音乐在其最初发表的国家已经进入公共领域时。