S+V+O, doing 的我的一点小想法，请大家一起补充讨论

morning333

S+V+O, doing
我认为此时的doing主要有三种功能
1.修饰doing，相当于，which do，把which省略之后，把动词改成ing的形式，表示主动
eg：
For members of the seventeenth-century Ashanti nation in Africa, animal-hide shields with wooden frames were essential items of military equipment, a method to protect warriors against enemy arrows and spears.
(A) a method to protect
(B) as a method protecting
(C) protecting
(D) as a protection of（C）
(E) to protect
2.修饰之前的整个句子，表示句子的结果状语，此时的逻辑主语是在整个句子
eg：
The cameras of the Voyager II spacecraft detected six small, previously unseen moons circling Uranus, whichdoubles to twelve the number of satellites now known as orbiting the distant planet.




(A) which doubles to twelve the number of satellites now known as orbiting

(B) doubling to twelve the number of satellites now known to orbit

(C) which doubles to twelve the number of satellites now known in orbit around

(D) doubling to twelve the number of satellites now known as orbiting（B）

(E) which doubles to twelve the number of satellites now known that orbit





3逻辑主语是S，和之前的谓语动词同时发生的动词，用ing形式表示伴随状态
He is lying on the bed, reading a book
这就是我总结的关于动词ing形式放在句尾。用逗号隔开的用法总结，只是小妹的短浅看法，请各位NN一起讨论~

zowenny

总结得不错！

morning333

THX，在各位NN面前班门弄斧了