问 OG12 - 11

robbinpeng · 发表于 2010-7-7 22:18:26

请教第11题：
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,
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

有have been to do这种说法吗？我感觉好像没有啊。为何答案选D?

robbinpeng · 发表于 2010-7-8 09:06:30

哪位能帮忙回答一下吗？

Helen懒洋洋 · 发表于 2010-7-8 12:10:13

这是一个平行结构通过平行就可以选出D 前一句说有很多build solid walls 的方法后面一句是说这些具体的方法是什么 be动词是“是”的意思，"to do"这里相当于是动词短语但起到的是名词的作用。

问 OG12 - 11

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