[求助/求高手指点]几个细小的问题讨论...

sladeyl

各位chasedream上的precursor，小弟做完og后整理了几点疑惑，希望大家能够慷慨解囊（解智囊吧亲们！！），帮帮我


（1）There areseveral ways to build solid walls using just mud or clay, but the mostextensively used method has been the forming of bricks out of mud or clav. and,after some preliminary air drying or sun drying, thev are laid in the wall inmud mortar.

(A) the formingof bricks out of mud or clay, and, after some preliminary air drying or sundrying, they are laid

(B) forming themud or clay into bricks, and, after some preliminary air drying or sun drying,to lay them

(C) havingbricks formed from mud or clay, and, after some preliminary air drying or sundrying, they were laid

(D) to form themud or clay into bricks, and, after some preliminary air drying or sun drying,to lay them

(E) that brickswere formed from mud or clay, which, after some preliminary air drying or sundrying, were laid

此题其他的选项都可以很轻松的通过其他的split排除，但Have beento do形式正确吗，这个用法怎么可以这么奇葩...（如果我小白了请大家不要鄙视我）

还有就是有关A选项的“The active gerundphrase the forming of bricks does not fit with the passive verb phrase thatfollows (they are laid)”不太理解，希望大神们可以帮助我分析一下

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（2）Based on accountsof various ancient writers, scholars have painted a sketchy picture of theactivities of an all-female cult that, perhaps as early as the sixth centuryB.C., worshipped a goddess known in Latin as Bona Dea, "the goodgoddess."
        该题目用based on 用法错误，那么到底什么时候才能用based on呢？based on作为opening modifier的时候，其所能修饰的主语是啥么。。。？
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（3）Beyond theimmediate cash flow crisis that the museum faces, its survival depends on if itcan broaden its membership and leave its cramped quarters for a site where itcan store and exhibit its more than 12,000 artifacts.

(A) if it canbroaden its membership and leave

(B) whether itcan broaden its membership and leave

(C) whether ornot it has the capability to broaden its membership and can leave

(D) its abilityfor broadening its membership and leaving

(E) the abilityfor it to broaden its membership and leave

（此处是否是情态动词can 与动词leave 平行呢？话说情态动词可以和动词平行吗？）

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(4)占位符(placeholder it)：it做形式主语的时候不指代任何东西?!（我一直都以为是指代that后面的部分啊）

以上内容是我看DUKB24总结的知识点中的到的，存在一些疑问；manhattan说：THE ONLYPRONOUNS ON THE GMAT THAT DON'T HAVE TO STAND FOR NOUNS:

It +description+ that +complete sentence (independent clause)

It +description+ to +verb (infinitive)

It + (TOBE verb)+ NOUN ：it做形式主语的时候不指代任何东西（想问一下，这个it真的什么都不指代吗？）

         小弟在此感激不尽...祝那些和我一样为了梦想还在坚持的CDER们早日上7！！！

          “它们是猎物，我们才是猎手”

enkyklios

It + (TOBE verb)+ NOUN ：it做形式主语的时候不指代任何东西（想问一下，这个it真的什么都不指代吗？）

这是种用法可否举出一例？

sladeyl

enkyklios 发表于 2013-7-28 03:23
It + (TOBE verb)+ NOUN ：it做形式主语的时候不指代任何东西（想问一下，这个it真的什么都不指代吗？）

...

“It + was my own brother + who committed the crime.”

大神DUKB24指出这里的it不指代“my brother”

enkyklios

sladeyl 发表于 2013-7-28 09:29
“It + was my own brother + who committed the crime.”

大神DUKB24指出这里的it不指代“my brother” ...

他说的是对的，这是强调 句啊

sladeyl

enkyklios 发表于 2013-7-28 13:39
他说的是对的，这是强调 句啊

placeholder IT一般也不都全是强调句吧？

sladeyl

求解答...
求各位大神指点~