do的名词形式是什么
do没有名词形式v.做，干，办(某事);(以某种方式)做;行动;表现;(问询或谈论时用)进展，进行
aux.用于实义动词前构成否定句和疑问句;构成附加疑问句;代替实义动词以避免重复
第三人称单数 does复数 dos现在分词 doing过去式 did过去分词 done
I could do it now, if you like.
如果你愿意的话，我现在就可以做这事。
What in the world did they think they were doing?
他们到底认为自己在做什么？
He would do well to concentrate more on his work.
他最好还是更加集中精力在工作上。