从OG11-24引申出来的问题

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.

protecting

as a protection of

to protect

我理解C正确。想问的是to ～表示的目的的状语应该如何表达？如果放在这里，要怎么表达可以是正确的呢？

A:应该不是to的问题,而是a method这里做同位语有歧义, 变成items是一个method

C:protecting代前句animal-hide shields with wooden frames were essential items of military equipment，整个过程作为一个方法

呵呵，没有说清楚。

不是A的to，是E选项

对的，那是不是把逗号去掉就可以拉？

to protect的不定式引起施动者不明确。上一句话有很多个名词，很难说protect是谁发出的

不定式做状语时，可以表目的，例如：

I've come to pick up my son.

The writer bought a computer to write novels quickly.

或者像楼上说的(the weapon) is used to protect...

如果是不定式做定语，有以下几种情况：

1.构成动宾关系：I have something to say.

2.介宾关系：Henry is a pleasant man to talk to。

3.主谓关系：He is the right person to do that job.

4.同位关系：His plan to set up more branches in other cities was not approved.

参照上述3的主谓关系，没有“，”直接是items of military equipment to protect....看似正确，但是与原题原意就产生差别了。关键在于这个分句前一句的语义，请慢慢体会下。

这里提供OG另一题作为比较参考：

OG11-101  

El Nino, the periodic abnormal warming of the sea surface off Peru, a phenomenon in which changes in the ocean and atmosphere combine allowing the warm water that has accumulated in the western Pacific to flow back to the east.

正确选项：is a phenomenon in which changes in the ocean and atmosphere combine to allow the warm water that has accumulated

原题与正确选项OG的解释： If the participial phrase were to modify the previous clause, a comma would have to be inserted between combine and allowing. A better choice would be to follow combine with to allow, showing purpose. In this sense, the environmental changes combine in order to allow the water to flow back east.