sat困难问题求教

wangzijun2006UID: 2181892

during the 1980's , the income gap between the richest and the poorest Americans widened significantly ,while continuing to expand in the 1990's
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为什么不对呢？黄金规则二不是说while 后可以省略it is 吗？
这句话的while continuing to expand 为什么错了？:confused:

[ 本帖最后由 wangzijun2006 于 2006-2-7 20:44 编辑 ]

云霎UID: 2103452

continue to do vs. continue doing.
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1 @. I. v1 D2 q; W. }) {我感觉。

Cindy001UID: 2183103

continue to do vs. continue doing
這有什么區別?

云霎UID: 2103452

continue to do 是接着做下一件事
continee doing 是接着做同样的事
. ~  p# `6 A4 M3 ]" ?' R( |
这里应该用后者.