prep1-139 还是不懂

yuripanda

韦氏大学词典 as 用法的解释
代词 2 : a fact that <is a foreigner, as is evident from his accent>

这样就很清楚了。

老褚2

hao

Jianke311

我觉得根据“trunk"，不会造成“their"的指代不清啊，所以C为什么不对呢? E该如何理解呢?最好是翻译一下,我觉得C很好翻译，但是E却翻译不出来。

Saradzy

Ron神的回答：
the placement of 'on earth' is also much better in e than in a.
- e says what it's supposed to say: we're looking at indications that are on earth. (this answer choice implies that better indicators are available elsewhere - presumably closer to the sun.)
- a says that tree growth is believed to be a good indicator by people on earth (--> martians beg to differ).
就是说On earth 在句首有种暗示其他地方有更好的indicator


关于C
Ron表示some things wrong with c:
* the placement of 'on earth' is just as problematic as in choice a (again, the sentence seems to be saying that residents of other planets disagree with us).
* 'as seen in the rings...' is a modifier that must be placed next to the thing that it modifies, which is 'the rate at which trees grow'. the way choice c is currently written, it says that indications of sunspot cycles can be seen directly in the rings - and it also implies that sunspot cycles (instead of trees) have rings!

fghrycn

补充几个例句：as非限定性定语从句， 从《大学英语与语法讲座与测试》摘录
As + be + 过去分词模式, be动词可省略
The material is elastic, as shown in the figure。
如图所示， 这种材料富于弹性。此处as不可用which代替， 作为从句主语
As + be + v-ing(现在分词)
Another reession is setting in, as is already occurring, for instance, with the car industry
be动词不可省略作为从句主语

As is reported， a foreign delegation will visit the city.
不可以说As it is reported