主语从句it用法.docVIP

It是形式主语but it is interesting that Einsteins theory provided a basis for the idea of black holes before astronomers started to find some evidence for their existence. （第三段）此句中的it为形式主语，实际主语为that引导的主语从句.The circumstances under which different people live make a great difference between the way in which they live and the way in which we live， and it ought to be our business to try to understand those different circumstances so that we can better understand people of other lands. 译：不同人的生活环境造成了他们与我们的生活方式上的巨大差别。我们的责任是应当努力了解这些不同的生活环境，以便更好地理解其他国的人。 语法 it是形式主语，真正主语是to try to understand those different circumstances.It is not yet known whether robots will one day have vision as good as human vision. 译：迄今尚不清楚机器人会不会有朝一日具有人眼那样的视力。本句的真正主语是 “ whether” 引导的主语从句， it 是形式主语；“ as good as human vision” 是后置定语修饰 “ vision” ..Hence， it can be argued that the people with whom we come into contact in these various contexts are all likely to have exerted some influence in shaping our attitudes， interests and even skills relevant to how we handle leisure.因此，可以这么说，我们在不同环境中接触的人都可能对形成我们的态度、兴趣、甚至对如何处理休闲时间的技巧产生某些影响此句的主干结构是主语从句it 作形式主语，真正的主语是 “that the people …。 handle leisure”。.There is a message that is trying to reach you， and it is important that it get through loud and clear.有一条信息要传达给你，重要的是，这条信息响亮而清楚地传到你的耳际。该句是由and连接的并列句，在后半句中，it是形式主语，that从句是实际主语How does it happen that the two-party system is so strongly rooted in American politics？ 语法：句中it 是形式主语，实际主语是that引导的主语从句。动名词短语作主语 Allowing domestic workers the freedom to seek the same type of work but with a different employer， if they so choose， is what groups like Anti-Slavery International are campaigning the Government for.allowing ……动名词短语作主语As research techniques become more advanced， the number of animals used in experiments may decrease， but stopping testing on animals altogether is a long way away.本句译文：“随着研究技术的日益先进，用于实验的动物的数量可能会减少，但距离彻底停止使用动物还很遥远。”这是一个由but并列的两个分句。后半句中stopping testing on animals altogether 是动名词短语作主语，注意stop后面的非谓语动词的用法。（stop doi