og语法的问题～～～请nn回答！！

bycsscsq

11.   There are several ways to build solid walls using just
mud or clay, but the most extensively used method
has been the forming of bricks out of mud or clay,
and, after some preliminary air drying or sun drying,
they are laid in the wall in mud mortar.
(A)    the forming of bricks out of mud or clay, and,0
after some preliminary air drying or sun drying,
they are laid
(B)    forming the mud or clay into bricks, and, after
some preliminary air drying or sun drying,
to lay them
(C)    having bricks formed from mud or clay, and,
after some preliminary air drying or sun drying,
they were laid
(D)    to form the mud or clay into bricks, and, after
some preliminary air drying or sun drying,
to lay them
(E)    that bricks were formed from mud or clay,
which, after some preliminary air drying or sun
drying, were laid
答案d 的and前面为啥能加逗号？？难道不是只有前后是句子时才有逗号的么？？
。。。感觉我问得很弱智。。。

bycsscsq

木有人理。。。看来问题过于弱智。。。

意韵甜心

不是啊~逗号是停顿的感觉嘛~
and前面的逗号是前面那句说完了，而且表明后面会说一个跟前面句子并列的东西。
and后面逗号说明后面那一段不是跟前面并列的~而是再往后的东西~

superbat28

一般情况下，两项平行是没有逗号的。但是，要注意的是大部分情况下，逗号的使用不是判断绝对语法错误的点。

这个题有逗号，是因为两个平行项算是比较长，加一个逗号可以使得句子的结构更清晰。所以，逗号一般就是这个作用

bycsscsq

一般情况下，两项平行是没有逗号的。但是，要注意的是大部分情况下，逗号的使用不是判断绝对语法错误的点。

这个题有逗号，是因为两个平行项算是比较长，加一个逗号可以使得句子的结构更清晰。所以，逗号一般就是这个作用

-- by 会员 superbat28 (2012/3/27 19:49:34)

谢拉～～～～～～～～～～～