And the reason that this should be so fast is we already did all the calculations for the formal charges.

这应该很快就能做出来的原因是,我们已经做完了关于形式电荷的所有计算。

麻省理工公开课 - 化学原理课程节选

He's finished with his pastoral.

他已经做完了他该做的。

耶鲁公开课 - 弥尔顿课程节选

Here what we has is all done.

这里的内容已经全部做完了。

麻省理工公开课 - 媒体、教育、市场课程节选

So if I post it on Wednesday to cover the material for that week, then you should attempt it as quickly as possible because I'm going to assume you have done the problems when you come for the next few lectures.

如果我周三布置了关于该周课堂内容的作业,你们应该尽快着手去做,因为当你下周来上新课时,我会假设大家都已经把上周题目做完了

耶鲁公开课 - 基础物理课程节选