she was on her knees scrubbing the kitchen floor子里为什有was过去式与ing现在进行

she was on her knees scrubbing the kitchen floor子里为什有was过去式与ing现在进行
she was on her knees scrubbing the kitchen floor
子里为什有was过去式与ing现在进行

she was on her knees scrubbing the kitchen floor子里为什有was过去式与ing现在进行
scrubbing这里并不是谓语了,而是伴随状语,是现在分词做伴随状语.如果想进一步了解,可以参照百度百科里面的【非谓语】词条.

She was on her knees这部分是主句，意思是“她跪在膝盖上/跪在地上”；scrubbing ……是现在分词短语起补充说明“刷洗厨房地板”。
这个句子也可以这样看：She was on her knees while she was scrubbing the kitchen floor。因为while 引导的从句中she was与主句中的she was 是重复的，所以在省略...

全部展开

She was on her knees这部分是主句，意思是“她跪在膝盖上/跪在地上”；scrubbing ……是现在分词短语起补充说明“刷洗厨房地板”。
这个句子也可以这样看：She was on her knees while she was scrubbing the kitchen floor。因为while 引导的从句中she was与主句中的she was 是重复的，所以在省略while的时候，she was 也被省略了。

收起