英语中的上网课怎么说

In English, an online class that is conducted over the internet is often referred to as an "online course" or "web-based course." Alternatively, you could also use the term "virtual class" or "distance learning course" to refer to an online class. For example, you could say:
"I'm taking an online course on computer programming this semester."
"I signed up for a web-based course on art history."
"My school offers virtual classes for students who can't come to campus."
"I'm considering enrolling in a distance learning course on business management."