请教牛人PREP的语法题

xyqhlxs

1.      A study on couples’ retirement transitions found that women who took new jobs after retiring from their primary careers reported high marital satisfaction, more than when retiring completely.                The answer is "More so than those who retired"   

    请牛人分析以下改正后的结构,  尤其是SO在这里的用法和意义.. 谢谢了!

2.      A different variety of giant tortoise can be found on every island in the Galapagos, each with its own style of oversized dome and comically scrawny neck.   

    可以用  “all with/having their own styles of oversized domes and comically scrawny necks” 吗?  为什么?

3.  Polio, although it is eradicated in the United States, it continues elsewhere and is able to be brought into the country by visitors.     答案是Although eradicated in the United States, polio continues elsewhere and could be

     请牛人比较此处could be 和 is able to be 还有 is capable of being 的用法

4.    Part of the proposed increase in state education spending is due to higher enrollment, since the number of students in public schools have grown steadily since the mid-1980’s and, at nearly 47 million, are at a record high.           正确答案是enrollment: the number of students in public schools has grown steadily since the mid-1980’s and, at nearly 47million, has reached

    请牛人帮忙分析一下enrollment后面的标点符号用法, 可以的话总结类似标点符号的用法... has reached在这里是和has grown.....并列做谓语吗? has reached前面只需用一个逗号就可以了吗?

谢谢各位啦!!

KsWonder

仅供参考，我也是正在看prep gram，导致现在看任何东西都在找语法错误或者不严谨的地方。

1.我认为more是指more frequently而不是指more satisfaction,因此so指report high marital satisfaction.又因为两群women的动作都是report，因此比较结构后方的women（用those指代）可以省略动词。
2.“each+单数名词”是强调型独立主格结构，而“all+复数名词”不是。其实我觉得all with选项也没什么错，但如果与强调结构做比较，还是each选项好一点
3.根据前人做的prep gram总结，be able to do表示有能力做sth,强调能力，can表示有可能做某sth,强调可能性，并且be able to do>be capable of doing.但是我认为该解释有点牵强，用在这道题上还凑合。
4.在enrollment后面那个“：”起到解释的作用，可以另起完整句子进行解释说明。我个人倒是比较偏好加上“：”或者“；”，这样一来就避免了主语逻辑不一致的问题。has reached和has grown平行，但是将at nearly 47 million提前作为插入语，所以在has reached有逗号，就等于and has reached a record high at nearly 47 million.

xyqhlxs

谢谢啦...  想通了许多..