我考试三门及格，一门不及格。

I got three passes and one fail.

《牛津词典》

学生通常要选三门A2证书考试科目。

Students will normally take three A2 subjects.

《牛津词典》

我通过了三门：地理，数学和物理。

I've got three: geography, maths and physics.

youdao

So I think it a lot of children I have. Bilingual children and a lot of them have two languages or even three languages.

就此我经常反思,我自己的学生，双语儿童,还有很多会,三门语言。

麻省理工公开课 - 媒体、教育、市场课程节选

Like, because I mean... Like this semester, I was hoping to take 3 sciences with an American Cultures class,

例如，像这学期，我想选三门科学课，外加一门美国文化课，

关于授课系统 - SpeakingMax英语口语达人

There are three different ones on this Sunday, this Monday, this Tuesday.

我们有三门不同的课程，分别在这周天，周一和周二开讲。

哈佛公开课 - 计算机科学课程节选