..such as.. 和such...as...的区别

Adela加油

两道题（正确句子），对于such as的用法

Socially andenvironmentally responsible investing is on the rise: last year in the UnitedStates, over $2 trillion was invested in funds that screen companies according to a variety of criteria such as adherence to labor standards, protection ofthe environment, and observance of human rights.

(GWD-4-34) civilizations that precededthem in coastal Peru,the Mochica developedtheir own elaborate society, based on the cultivation of such cropsas corn and beans, the harvesting of fish and seafood, and the exploitation ofother wild and domestic resources.

为什么第二个句子不可以用such as corn and beans呢？ corn和beans不是corn的一种吗？

有没有人解释一下such as.....和 such ... as的区别？

LFGT

such as.....后面跟并列的对象，对象之间没有从属关系；
such ... as中间用一个物类名词后面跟具体的并列对象。

corn&beans都是crops的下属分类。如果果你说成such as crops，corn and beans就对不了，因为他们概念不一样，不能这样并列。所以such后面跟一个总类名词，as后面再用具体名词。

Adela加油

LFGT 发表于 2017-11-20 12:49
such as.....后面跟并列的对象，对象之间没有从属关系；
such ... as中间用一个物类名词后面跟具体的并列对 ...

我发现我打错了，应该是问 为什么不可以是 cultivation of crop such as corn and beans，因为我的理解是 crop是大类，corn和beans是下属，照理和第一句的一样啊，adherence...protection都是criteria的下属。

LFGT

Adela加油 发表于 2017-11-20 15:40
我发现我打错了，应该是问 为什么不可以是 cultivation of crop such as corn and beans，因为我 ...

cultivation of crop such as corn and beans也是正确的，但句意不一样：

cultivation of crop such as corn and beans，这里的crop一个大类，有玉米和大豆，也有小麦和土豆，但只举例说了玉米和大豆；

cultivation of such crop as corn and beans，这里的crop只包括玉米和大豆这两种，没有别的种类；

Adela加油

LFGT 发表于 2017-11-20 18:17
cultivation of crop such as corn and beans也是正确的，但句意不一样：

cultivation of crop such as  ...

好的~~那我懂啦！Thanks