tous,all的区别?
what is known to us是what引导的名词性从句,what 在从句中作主语,从句与主句之间没有逗号;

as is known to all是as引导的非限制性定语从句,as在从句中作主语,从句与主句之间需加逗号,例如:
What is known to us is that the earth is an ellipse我们都知道地球是椭圆形的(本句中what引导主语从句,只能放在句首)
As is known to all, the eaeth is an ellipse.
或者:The earth is an ellipse, as is known to all.所有人都知道,地球是椭圆形的
(本句中as引导非限制性定语从句,在从句中作is known的主语,指代the eath is sn ellipse,as引导的非限制性定语从句可以放在句首,也可以放在主句之后,用逗号与主句隔开)
如何理解泰戈尔的诗句life?
人类被赋予了生命,唯有奉献才得配拥有!
forustobeinagoodmood中为何用tobeit指代什么?
分析:固定结构的主语从句,it's adj. to do sth。it 是 形式主语,真正主语是不定式短语。同义:To be in a good mood is important for/to us.译作:保持良好情绪对我们而言是极其重要的。例句:It is of vatal importance to stop smoking at the moment.
us后面加不加to?
let是使役动词 后面不能接不定式to,正确说法是:let us do
一首jackson?
这首歌名叫《Ben》,出自MichaelJackson于1972年发行的同名独唱专辑。


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