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》

例如时态，介词，连词和其他一些让你能造出语法正确的句子。

For example, you had to maintain tenses, and you had to use prepositions, conjunctions, and others properly to create grammatically correct sentences. Say, a sentence like the following.

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过去的语法规则不允许在句尾使用介词，比如“whom we've worked with”，但这是17世纪的散文家约翰·德莱顿（John Dryden）的臭毛病。

The old rule against stranding a preposition at the end of a clause, like "whom we've worked with", was a peeve of the 17th-century essayist John Dryden.

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