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.
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
E. to protect
是的 也可以说是items,因为shields就是items,两个版本的og给出的解释一个版本说是items一个版本是shields,所以别人说主系表结构都可以,因为在A IS B,v-ing里面,A和B是一样的,不管是哪个protecting都说得通,但是A DO B,v-ing的话,v就优先作为伴随动作或者伴随状语,伴随状语就是对前面整句话做一个解释或者是前面的结果等,伴随动作就是和前面句子动作同时发生,伴随动作和伴随状语二者满足其一就可以了