在语法规则中没有哪一条表明以介词结束一个句子是错误的。

There is nothing in the rules of grammar to suggest that ending a sentence with a preposition is wrong.

《柯林斯英汉双解大词典》

危机的结束似乎还要一长段时间。

An end to the crisis seems a long way off.

《柯林斯英汉双解大词典》

每场比赛结束以后，一条信息就会闪现在屏幕上。

After each game is finished, a message flashes on the screen.

《柯林斯英汉双解大词典》

OK. Now, last thing about variables, and then we're going to start pushing on this, is where can you use them?

好，关于变量的最后一件事，然后我们就要，结束这个话题了，这个问题就是在什么地方可以应用变量？

麻省理工公开课 - 计算机科学及编程导论课程节选

Now I'd like to end -I think I have a few minutes here--I'd like to end with a particular piece.

现在我想差不多快结束了,应该还有几分钟,那就用特殊的一段曲子来结束吧

耶鲁公开课 - 聆听音乐课程节选

Well really, the things we've looked at thus far can you do after just a semester of this kind of material and exposure to this particular world.

当结束这样一门课时,你是不是能通过学习和接触计算机科学,也做出我们刚刚看到的这些东西。

哈佛公开课 - 计算机科学课程节选