sat grammar 几道

题目

sat grammar 几道
Determined to make a name for herself as a writer of short stories,Helen never submits anything to an editor until revising it several times.
答案说是revising错了 - -为什么 难道until后面不能直接加动名词?句意没错啊
2‘ A thick grouth of sunflowers standing ten feet tall,their brown heads drooped over the fence with the weight of their seeds.
A thick grouth of sunflowers stood ten feet tall,their brown heads drooping over the fence with the weight of their seeds.
这两个的区别是什么啊- -不是都是 sth doing,sth do.的形式吗- -

答案

1.首先until在这里是连词,后面应该跟一个从句,正确答案应该为...until she revised...,由于从句的主语和主句一致,故 she 可省略,即...until revised.
2.其实这两个句子都对,只是侧重不一样罢了,第一个句子是强调后面的their brown heads drooped over the fence with the weight of their seeds,而A thick grouth of sunflowers standing ten feet tall表伴随,而第二个句子与之相反,这就得看作者在原文中的用意了.
还有一点应该注意,在很多时候由于谓语的某一部分过长则需将其单独提出来做伴随状语,这样会让人感觉更简练,主谓分明,这就是第一个句子的情况,但也没有绝对的对错.