You do not have to do this, but it's good practice.

您并不是必须要这样做，但这是一种很好的做法。

youdao

I find even more exciting the things I did not have to do.

我发现了我不必须要做的更令人兴奋的事。

youdao

They did not have to do this, but chose to... out of compassion.

他们不是一定要这样做，是他们出于怜悯而选择的。

youdao

But he did not have to do that, as the Senate voted down the funding 58 to 40.

VOA: standard.2009.07.21

so it's nice just to be able to relax and not have to do work.

所以能抽空放松一下感觉非常不错。

百慕大出身 - SpeakingMax英语口语达人

But hopefully, you will not be satisfied to just make a general statement here when we do have these glitches.

但是希望，大家不会仅,仅因为大致符合就满意了,毕竟还有些小偏差。

麻省理工公开课 - 化学原理课程节选

Ms. Marshall was relieved to find that she did not have to do a major rewrite.

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If Dr Henkel is right, they might not have to do so or, at least, not to the same extent.

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If you have Sky TV, Virgin Media or Freesat on all your TV sets, then you do not have to do anything.

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