[译] 图书馆里不准谈话。
[误] It is not allowed to talk in the library.

[正] People are not allowed to talk in the library.
[注] 在 allow 前面，不用“it”作为句子的形式主语。也就是说，表达“不准”这个意思，不用“It is not allowed”这种句型。