这里的that 是什么用法 还有it是什么用法power and water are interconnected and that has serious consequences for the American West as it grapples with climate change

The most surprising thing about it,however,is that it can land anywhere.这里的is that是什么用法that是特指吗代指，说错了，还有about 这里的that 是什么用法 还有it是什么用法power and water are interconnected and that has serious consequences for the American West as it grapples with climate change The most surprising thing about it,however,is that it can land anywhere.这里的is that是什么用法是代指吗,about是什么用法 that在许多句子里的用法It's pity that.这个that是什么意思呢,或是什么用法?还有silence is the sleep that nourishes wisdom这里的that又是什么意思呢 Isn't it strange that the lazy boy这里Isn't it 是什么用法? 这里的that是什么用法?he　said　that　should　help　each　other　if　they　met　beasts?如上句的that是什么用法?真心求解答.句子的that后面还有个they应该是’that　they’。 it is going to be built. 这里的be是什么用法?谓语是哪个? it falls as 这里的as是什么用法? It is the same today that it always was语法问题原文是A good book may be among the best of friends.It is the same today that it always was ,and it never change.请问这里的that是什么用法,是定语从句吗?怎么从语法角度来理解 有半句话不太明白so the courses are OK as much,it's just that had it been left to you ,you would have chosen a different one.这里的it's just that had it been left to you 中的had 怎么提前了 还有been left to you 是什么用法 这里的whether...or...是什么用法?是要么.要么.They spring from the central fact that the Black characters in these novels exist in a predominanty white culture,whether they try to conform to that culture or rebel against it. it was（subsequently）discovered that several errors had been made.（subsequent）为什么这里填副词,不能填形容词呢?能说说这个区别和用法吗?还有It was这个句型的相关用法. It's raining heavily outside这里的outside是副词还是名词,请列举名词用法和副词用法还有形容词介词 it,one,that 的用法? it seems that 的用法 it seems that的用法 it follows that的用法 and that ends our special bulletin for today,这里的that是什么用法,