am vs. do (I am not agree. vs I don't agree.)

[Querrymary]

Hi, teachers! :) Could you help me on this?

(wrong) I am not agree.
(right) I don't agree.

When do we use "am" and when do we use "do"?

Thanks!

:D

[Alan]

Hi,

We use 'do' in question and negative sentences as in: Do you understand? I do not understand. Therefore I don't (do not) agree is the correct form. 'Am' is used for the first person of the Present tense of the verb 'to be'. If you use the verb 'to be' on its own, it describes a state or condition as in: I am happy/I am not happy.

Alan
_________________
English as a Second Language
You can read my ESL story Present Simple