不做英文怎么写

可以表达，借助时态表达就行（在中文中时态体现不明显）。如果用过去时：He didn't smoke. 就翻译：他没有抽烟。如果用一般时：He doesn't smoke.就翻译：他不抽烟. 以前不抽烟：I used not to smoke

there is no need to do something

not doing anything

without doing anything.do nothing.

never 没有特定的结构.属于副词,只不过表示否定意思罢了.不知道你上下文是什么意思,但是就never本身不存在这两种形式.

do nothing

He didnt' smoke. 表示他以前不抽烟，且并没有说明他现在的情况。He doesn't smoke for some reason.现在因某种原因不抽烟He didn't smoke for some reason .以前由于某种原因 而不抽烟。