标题: 求过去完成时的用法~~ [打印本页] 作者: VictorZhow 时间: 2012-12-28 01:04 标题: 求过去完成时的用法~~ 这是一道OG上的题， The Iroquois were primarily planters, but supplementing their cultivation of maize, squash, and beans with fishing and hunting. A)but supplementing b)and had supplemented c)and even though they supplemented d)although they supplemented e)but with supplementing 答案是D，但我选的B，首先我觉得这里用and表并列关系也不错啊，然后就是什么时候才会用到had supplemented 这种past perfect tense. 是要有具体时间吗？作者: sisichen666 时间: 2012-12-28 01:31
B选项：首先and改变原文but的转折逻辑；其次，看时态讲一个动作supplement比were planter发生得更早，不合逻辑。