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地板
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发表于 2010-2-19 14:50:52
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哦,感谢回复。 但是while doing的逻辑主语就不会是A吗?不会混淆吗???
还有一个问题就是:如果while doing是句子省略的话,那么就视为时间状语从句;A allow B to do sth while (B is) doing sth,to do 介词短语作为宾补修饰B,while doing 作为时间从句修饰介短的do动作, 问题就来了,不是说从句不能跟介词短语吗???!!(大全802为证)
802. The peaks of a mountain range, acting likerocks in a streambed, produce ripples in the air flowing over them: theresulting flow pattern, with crests and troughs that remain stationaryalthough the air that forms them is moving rapidly, are known as “standingwaves.” (A) crests and troughs that remain stationaryalthough the air that forms them is moving rapidly, are (B) crests and troughs that remain stationaryalthough they are formed by rapidly moving air, are (C) crests and troughs that remain stationaryalthough the air that forms them is moving rapidly, is (D) stationary crests and troughs although heair that forms them is moving rapidly, are (C) (E) stationary crests and troughs although theyare formed by rapidly moving air, is |
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