这个句子的主干是什么，主语是the sun ，系动词是was，表语是3个小句子还是一句？谢谢谢谢

Question

如题所述

Answer 1

您好，... the sun was gently filtering through the trees, softly illuminating the historic brick buildings and causing the green grass to sparkle in the early morning dew. 这个句子的成分是：
1）主语 = the sun
2）谓语动词 = 3个并列的（过去进行时），was filtering，（was）illuminating，（was）causing
3）宾语 =
the trees 作 was filtering through 的宾语
the historic brick buildings 作 was illuminating 的宾语
the green grass 作 was causing 的宾语

假如把句子分开来可能比较清楚：

A）The sun was (gently) filtering through th treees.
B）The sun was (softly) illuminating the historic brick buildings.
C）The sun was causing the green grass to sparkle in the early morning dew.
因为3个句子的主语是一样的 the sun，谓语动词都是（过去进行时），并列时，助动词 was 可以省略，就变成了 the sun was ... filtering through ...., illuminating ..... and causing .... 的（并列谓语）结构。
所以句子的主干结构是（主谓宾）结构，不是（主系表）结构。也就是（主谓宾+谓宾+谓宾）的结构。

Answer 2

句子主干:the sun was filtering through the trees,illuminating the buildings and causing the grass to sparkle.主+系+表结构,表语是filtering….,illuminating….and causing….三个现在分词短语。