为什么不早上第一件事就做它?
1. 句子结构是疑问句:
Why 疑问词
not do 谓语动词
it 宾语
first thing 状语
in the morning 时间状语
2. 名词短语first thing是状语,表示排在第一位.在这里的用法叫副词性名词(adverbial noun).类似的例子还有:
We walked miles. (名词miles是状语)
I went home. (名词home是地点状语)
You can do it tomorrow. (名词tomorrow是时间状语)
The dog weighs thirty pounds. (名词短语thirty pounds是状语)