as when、after when、such as when 已搜所有讨论贴

Although it claims to delve into political issues, television can be superficial such as when each of the three major networks broadcast exactly the same statement from a political candidate.

(A) superficial such as when each of the three major networks

(B) superficial, as can sometimes occur if all of the three major networks

(C) superficial if the three major networks all

(D) superficial whenever each of the three major networks（E）

(E) superficial, as when the three major networks each

1.这题看过N多讨论贴了，对于as when我知道是有就如、正如当。。。的意思，as这里做连词（也有人说做adv的请大家确认一下），我个人认为是做adv

2.有人说such as除了加名词和Ving以外还可以加what从句和介词短语，所以这里A的such as when是对的，错在后面的主谓不一致？这样的说法对么？

白勇上such as用法：
            

（1）such as＋名词短语
            

（2）such as＋doing sth.

（3）such as后不可跟除what从句之外的从句。

这里有2个选项，并不在同一道题目中：

1.such as electromagnetic waves do, will, it is hoped, enable

2.such extraordinary fees as they do today

such as 后面到底能不能跟从句（名词性从句）或介词短语/when从句

3还有就是og10-124

124.
    During Roosevelt’s years in office Black Americans began voting for Democrats rather than Republicans in national elections, but Black support for Democrats at the state and local levels developed only after when civil rights legislation was supported by Harry Truman.

(A) developed only after when civil rights legislation was supported by Harry Truman

(B) developed only after when Harry Truman supported civil rights legislation

(C) developed only after Harry Truman’s support of civil rights legislation

(D) develops only at the time after the supporting of civil rights legislation by Harry Truman（C）

(E) developed only after there being Harry Truman’s support of civil rights legislation

In choices A and B, after when is unidiomatic: one word or the other can be used to establish temporal sequence, but not both together. In D, the phrase at the time after is awkward and temporally confusing; moreover, the present tense develops is
     used incorrectly to describe action completed in the past. In E, the construction after there being... support is ungrammatical. Choice C, grammatical and idiomatic, is the best answer.

after和 when都是连词，两个连词放在一起就错，那么as when怎么理解呢？

谢谢AlienX

终于有人看偶的帖子了，那such as 后面到底能不能跟从句（名词性从句）或介词短语/when从句呢？？

非常感谢AlienX解惑！！