OG12-19

liaoyoumin

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D 但不明白A和E错在哪？求教牛牛

liaoyoumin

感谢楼主，很有启发！

daoyings

The Iroquois were primarily planters，这里面的were是系动词。
而but the Iroquois were supplementing这里面的were是助动词
两个were功能不同，不可共用，即后面那个不可以省略。而且就算这么补了，时态确实也不对。
--------
另外A,E里面用了supplementing和with supplementing如果本意是想表示伴随，但是前面是主系表结构，而且supplementing和with supplementing前面各自都有连词，所以不可能做伴随状语。故，错误。

其实A和E的错法很纠结。

liaoyoumin

我的理解：
连词的省略形式
A=but the Iroquois were supplementing
E=but the Iroquois were with supplementing
A 时态不对，E 意思不对 故否定，不知大家怎么理解？

gifiler

A ，but+句子，因为是连词
E同理