宾语从句
在复合句中用作宾语的从句称为宾语从句 (object clause)。引导宾语从句的关联词有从属连词、疑问代词、疑问副词、缩合连接代词、缩合连接副词等。如：
★ Animal right activists claim that animal tests are cruel, inhumane and unnecessary.
动物权益保护声称动物实验很残忍、没人道和不必要。(关联词是从属连词that)
★ I know he has succeeded.
我知道他已经成功了。(在非正式文体中关联词that被省去)
★ It is hard to imagine what effects garbage will exert on our life.
很难想象垃圾将对我们的生活造成什么影响。(关联词是疑问代词what)
★ I will tell you why I came here.
我会告诉你我为什么来这儿。(关联词是疑问副词why)
★ I would like to see where you live.
我想去看看你住的地方。(关联词是缩合连接副词where)
宾语从句也可以用作介词的宾语，如：
★ It is the major contributor to why so many young females commit crimes in recent years.
这就是为什么近年来许多年轻妇女犯罪的主要原因。
★ But the origins of what is now generally known as modern architecture can be traced back to social and technological changes of the 18th and 19th centuries.
现代建筑学的起源可以追溯到18世纪和19世纪的社会和技术变化。
有时介词可以被省去。如：
★ Nobody cares (for) what happened to the wildlife.
没有人关心那些野生生物发生了什么。
★ Be careful (as to) what he is doing.
你要注意他在做什么。
有时候全句可以用it作为形式主语，如：
★ He made it quite clear that he preferred reading to writing.
他很明确地说他更喜欢阅读而不是写作。
★ You may rely on it that they will help you.
你可以指望他们会帮助你。
