The tag question is a very common linguistic phenomenon in oral English.

附加疑问句是英语口语中很常见的一种语言现象。

youdao

The tag question is one of the important English sentence patterns of speech.

附加疑问句是重要的英语口语句型。

youdao

If the first part of the sentence is affirmative, the tag question is usually negative.

如果句子是以肯定句开始的，那附加疑问通常使用否定句。

youdao

Why did no-one question Bayer on the price tag of its drug?

BBC: Do drugs really have to be so expensive?