I am wondering what would be the context of this sentence. From the previous continuous tense lessons, the "aan+het+infintive" would mean they are doing the action at the moment. So would this sentence imply that they are somewhat "restless", causing them to walk around non-stop at the moment? Thanks in advance! :)
In English Present continuous means the action in progress at the moment. Imagine, someone comes up to you and asks: what are you doing? Usually, time indicators are: now and at the moment. These are the main uses of pres. cont. tense. There are some more, to indicate the planned action or time schedules. BUT!!! In this particular sentence i am confused about "always" this is time indicator of present simple. Like of the repeated action. Why then we are forced to use continuous??!! Any ideas? Would appreciate any help.
yes, indeed, aan het + (bare infinitive verb) is a construction that is used to signal constructions actions. There are other ways of signalling the continuous aspect, but you'll learn them further along the tree.
Note: well, more than an infinitive verb it's a gerund, since it has nominal value given the fact that it's preceded by a preposition+definite determiner. But you don't need all this grammar-nerdery stuff. I just wanted to say it for the sake of precision.