[求助]大全167

baobaob

1.        Because paper of all kinds is the biggest single component of municipal trash, many municipalities have tried recycling to reduce the cost of trash disposal.

(A) Because paper of all kinds is the biggest single component of municipal trash, many municipalities have tried recycling to reduce the cost of trash disposal.

(B) Because paper of all kinds is the biggest single component in municipal trash, many municipalities tried to recycle so that the cost of trash disposal is reduced.

(C) Because paper of all kinds are the biggest single components in municipal trash, many municipalities have tried to recycle to reduce the cost of trash disposal.

(D) All kinds of paper are the biggest single components of municipal trash, and so many municipalities have tried recycling to reduce the cost of trash disposal.（A）

(E) All kinds of paper is the biggest single component of municipal trash, so many municipalities have tried to recycle so that the cost of trash disposal could be reduced.

我的问题是B为什么不对呢？A是什么用法？recycling是名词吗？

[此贴子已经被作者于2006-2-23 22:08:25编辑过]

billytang1980

B用了被动时态，A比B好。

orange2005

B后半句的主句的时态是过去时（tried to），和前面、后面的一般现在时的时态不一致。所以把B排除。

bluebabka

弱弱地再问一个问题:try to do和try doing在用法上有什么区别么?

bluebabka

up

zhangsr

我理解A这个recycling是个名词, i tried a bmw to race last week.

像风一样离去

try to do: you try to do something, or try and do it, when you make an effort to do it, because you need to, or want to, do it;简单理解to attempt to do or get something.
try doing: to do or use something for a short while to discover if it is suitable, successful, enjoyable etc
摘自语法大全注释。