Do I not do enough?

难道我做的不够多？

youdao

You'd better not do that again.

你最好别再这样做了。

《牛津词典》

I would be remiss if I did not do something about it.

如果我对此不做点儿什么，就是懈怠。

《柯林斯英汉双解大词典》

"What government should not do is pile on more taxation, regulation and litigation that kill jobs and hurt the middle class."

VOA: special.2010.01.30

But, you know why not do something a little special, little different, and they decided instead to use lithium.

但是你懂的，为什么不做的更特殊，更与众不同一些呢？

麻省理工公开课 - 化学原理课程节选

Because your store might not do so good, if you just first open and no one has ever heard of you,

因为你的商店也许会没那么好。如果你是第一次开店，没有人听说过你的话，

想开精品店 - SpeakingMax英语口语达人

My FORBES stock picks, which were chosen expecting a more vibrant market, did not do well.

FORBES: We're Too Gloomy

For his part, Clemens said he cannot in good conscience admit to something he did not do.

NPR: Clemens Denies Drug Use, Pettitte's Account

Is it safe to say that's the one thing you should not do as an ordinary investor?

NPR: Listeners' Money Questions Answered