[求助]885 SecE-23

genimix

A new phenomenon visible at Managua’s major intersections is waves of vendors and beggars, many of them children, who mob cars at the stoplights

主干：A new phenomenon is waves of vendors and beggars
         很多人认为单数的phenomenon与复数的waves单复数不一致，但请注意phenomenon是抽象名词，描述   一种现象，因此不要求主宾的单复数一致。

后置定语：visible at Managua’s major intersections 修饰phenomenon

宾语：waves of vendors and beggars：“waves of 小贩和乞丐”。大家在中国也应该看见过类似情况，很多卖报纸的小贩和乞丐不都是在那种红绿灯比较长的十字路口拦车卖报和乞讨吗？

many of them children：独立主格结构作插入定语修饰vendors and beggars，请注意独立主格结构只能作状语或定语，没有做同位语一说。

who mob cars at the stoplights，定语从句修饰vendors and beggars

大家应该明白了吧