[求助]天山9-26

Q26:
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
Answer:   D
Mine  B
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看上去就很乱的题目，但是觉得D的has been to form 似乎有点问题，更倾向于用B的 Has been forming

NN们出水解惑啊

这里has been是谓语，to form 和to lay 一起作为不定式做表语。另外，题目时态不要求用完成进行时态，答案B还改变了题目的意思；同时B选项里面，form和lay引导的动作还不是并列的形式。

这题怎么会has been前后元素词性不同呢? A正好就是两个名词并列, 多好啊, OG不是也有一题强调这个吗?

NN出来讲解一下吧, 困惑!

NN帮忙看看吧.

为了好理解，我把has been改成is。这样就简单了，原句可以变成：

the method is to form bricks and to lay them in the wall.所以D对。

A可简化成：the method is the forming of bricks, and they are...前后不平行。

B可简化成：the method is forming bricks and to lay them in the wall.前后不平行。

我当时对于这个题目也是觉得有点不爽, 正好就一起问了, 楼上几位可以先看看OG对于一个类似的Be平行的解释:

84. One legacy of Madison Avenue's recent campaign to appeal to people fifty years old and over is the realization that as a person ages. their concerns change as well.

(A)  the realization that as a person ages, their

(B)   the realization that as people age, their

(C)  to realize that when a person ages, his or her

(D)  to realize that when people age, their

(E)   realizing that as people age, their

In choice A, the plural pronoun their does not agree in number with the singular noun person. Choices C, D, and E can be faulted for failing to complete the construction One legacy ... is with a noun that matches the noun legacy; these choices use verb forms--the infinitive to realize or the present participle realizing--in place of a noun such as realization. Further, when in C and D is less precise than as in characterizing a prolonged and gradual process such as aging. B is the best answer.

从Be动词的平行角度看, 似乎天山这题有点怪, 请教大家!

个人觉得ETS所说的平行不是绝对的。以OG84题为例，其结构是“one legacy... is the realization”,主语与标语共同用名词来平行。但同样，在GMAT中还存在“the way... is to do..”的结构。我个人以为，这主要是由主语决定的。“方法（way,method等）”可能是名词（比如有道提取金矿的题，**方法是早在××年前就已经确立的一种提取金矿的方法，具体题号忘了），但也可能是表示一系列动作的。

天山的这个题是说：有很多方法能建造坚固的墙，但最常用的方法是用泥和石灰做成砖，然后经过日晒或风干后，用灰泥来砌墙。句子基本结构是"the method has been to do and to do"需要两个动作并列，所以选D。

A选项用the forming of。。。（名词）与they were laid（句子）并列，错误

B选项用forming...（分词短语）与to lay（不定式）并列，错误

C选项用having bricks formed from mud or clay（分词短语）与they were laid（句子）并列，错
E选项，the method has been that的大结构没有错误，但从句中which修饰的是mud or clay，修饰对象错，句意错

应该先看大的平行结构，再看小的

楼上说的题目我好像也有印象, 但是刚才没有找到, 不知道可否给出题号?