Speech part of "over"

'Over' is a preposition. With the 'be' verb, no adverb is possible.

Thank you so much and then here 'about' is also a preposition?
The amount is about $100.
Or here about is considered as an adverb?

Hans51 then here 'about' is also a preposition? The amount is about $100.

Yes. Read my last post regarding the possibility of its being an adverb.

Mister Micawber With the 'be' verb, no adverb is possible.

And then what about 'I am home' and 'I am here'? I think that home and here are adverbs. What do you think?

This argument comes up again and again. There, they are nouns. 'Home' is an idiomatic contraction of 'at home', and here's the dictionary definition of the noun 'here':

here (noun) this place: It's only a short distance from here.

I am with you but when we say, "It is nearly / almost $ 100.", adverbs also can be put after the verb be and then the position is also for adverbs and I think that about and over can be labelled as adverb. What do you think?

Hans51 I think that about and over can be labelled as adverb. What do you think?

I have already told you what I think. Are you reading any of my posts?

Mister MicawberThere, they are nouns. 'Home' is an idiomatic contraction of 'at home', and here's the dictionary definition of the noun 'here':

I have to disagree with you there. I go with Cambridge: http://dictionary.cambridge.org/dictionary/learner-engl

Mister MicawberThis argument comes up again and again.