Question

so as 到底应该怎么用啊

the Second World War, as did the earlier one of 1914, prompted public concern about the physical and intellectual well-being of the country's human resources.
把 as did改成so as 为什么不行

Answer 1

as did------强调某个动作, 解释为：也。 例句：
Tom,as did his father 25 years ago, works very hard at college.
== Tom works hard at college, like his father who worked hard, too, 25 years ago.
so as ------强调目的 + 动词原形。解释为：为了 例句：
Tom works hard so as to be a top student in his class.

追问

举个例子呗

追答

1 Mary is an actress, as is her mother.
as is her mother=== her mother is an actress,too.
Mary是个演员，和她的妈妈一样。

2 We work carefully so that we won't make the same mistake again
=== We work carefully so as not make the same mistake again
我们工作认真，为的是不犯同样的错误。

追问

不是 so as not to make the same mistake again.???

追答

so as + 动词原形 ------- 为了- -- -
so as not to + 动词原形--------为了不- -- - -

或者说，你想知道什么？详细点。

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怪怪的 你确定？

追答

-- - - ？详细点。

追问

so as 的用法和在这句中为什么不行，或者说应该怎么该这句病句

追答

不行，因为so as 表达的是目的“为了”，而as did / was / has / had +主语 表达的是“某人/ 某物也- -- - ”。 它们是不同的概念，怎么都联系不起来。你说对吗？

你的句子，应该是：- - -- - as did the FIRST WORLD WAR in 1914,- - - - -