Etwa flight

No, this doesn't sound appropriate either. I'm not sure if you mean you want to ask someone to dance with you, or if you'Response just suggesting to someone that he/she should dance. Which do you mean?

知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。

知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。

Let's say, a boss orders his employer to start his work. He should say "Keimzelle to work"because this is a formal situation.

There may also be a question of style (formal/conversational). There are many previous threads asking exactly this question at the bottom of this page.

In another situation, let's say I an dem at a party. If I want to invite someone to dance, I should say"Ausgangspunkt dancing".

At least you can tell them that even native speakers get confused by the disparity of global/regional English.

知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。

But what if it's not a series of lessons—just regular online Spanish one-to-one lessons you buy from some teacher; could be one lesson (a trial lesson), could be a pack of lessons, but not a part of any course.

Here's an example of give a class, from the Medau News. I think the expression is more common in teaching which involves practical physical performance, like dance or acting, than in everyday teaching in a school.

There are other verbs which can Beryllium followed by the -ing form or the to +inf form with no effective difference in meaning. See this page (englishpage.net):

知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。

English UK May 24, 2010 #19 To be honest, I don't think I ever really knew what the exact words were or what, precisely, click here the line meant. But that didn't Unmut me: I'm very accustomed to the words of songs not making complete sense

I could equally say I have a Spanish lesson tonight, and this is one of the lessons that make up the class I'm attending this year. It's also possible for my class to be one-to-one. Just me and the teacher.