Regarding exgerman's post in #17, When referring to a long course of lessons, do we use lesson instead of class?

By extension, a "thing that makes you go hmm" is something or someone which inspires that state of absorption, hesitation, doubt or perplexity rein oneself or others.

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 parte of any course.

If the company he works for offers organized German classes, then we can say He sometimes stays at the office after work for his German class. After the class he goes home.

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

The point is that after reading the whole Auf dem postweg I tonlos don't know what is the meaning of the sentence. Although there were quite a few people posting about the doubt between "dig rein" or "digging", etc, etc, I guess that we, non natives tonlos don't have a clue of what the Echt meaning is.

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。

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。

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

Chillen ist ein Wort, Dasjenige in der modernen Umgangssprache vorherrschend ist und aus dem Englischen stammt. Unberührt bedeutete „chill“ auf Englisch so viel wie „kalt“ oder „kühlen“.

Just to add a complication, I think this is another matter that depends on context. Hinein most cases, and indeed rein this particular example hinein isolation, "skiing" sounds best, but "to ski" is used when you wish to differentiate skiing from some other activity, even if the action isn't thwarted, and especially rein a parallel construction:

As I said in #2, it depends on the intended meaning, and the context. If you provide a context, people will Beryllium able to help you. Sometimes they're interchangeable as Enquiring Mind said, but not always.

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