Questions & Answers about Bài này được viết bởi bác sĩ.
Bài is a very flexible noun. Depending on context, it can mean lesson, exercise, article, piece of writing, post, or text.
So bài này means this lesson/article/text/piece, depending on what kind of bài you are talking about.
In this sentence, if the meaning shown to the learner is something like This article was written by a doctor, then bài is being understood as article or piece of writing.
In Vietnamese, demonstratives like this and that usually come after the noun.
So:
- bài này = this article/lesson
- bác sĩ này = this doctor
This is different from English, where this comes before the noun.
A very common pattern is:
noun + này = this + noun
noun + đó / kia = that + noun
Here, được is helping form a passive sentence.
So in Bài này được viết bởi bác sĩ, means something like .