Adverb
Adverbs
The noun in the sentence is girlfriend, object of the preposition 'with'.
I don't know what you mean by 'preposition property' but at is a preposition.At can be used at the end of a sentence or question:'What are you playing at?'
There is no preposition. The word "inside" is an adverb, because it has no object. In the sentence "I like playing video games inside the mall" the word inside becomes a preposition, with the object mall.
He decided to serenade his girlfriend under her window with a beautiful love song.
Christmas is the object of the preposition for, in that sentence.
"Until" is the preposition in the sentence "They played until 11 o'clock." It shows the relationship between the playing and the specific time.
Yes, "around" can function as a preposition in a sentence, indicating movement or location in the vicinity of something. For example, in the sentence "The cat is playing around the tree," "around" is used as a preposition indicating the location of the cat in relation to the tree.
I must have this soiled shirt laundered before I wear it again.
I ate a strawberry for a snack after playing outside with my friends
The adverb is "outside". It is an adverb of place, describing where they were playing.
Playing is the verb .In this sentence, "children" is the noun. And "playing" is the word which describes their action. A verb describes the action of a noun in general. And as the word "playing" describes the action of the noun, "children", it is the verb in this sentence.