please mam/sir can u please tell me that when we should use present continuous tense, present perfect tense and present perfect continuous tense??????
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In present tense:
I read. [Simple Present]
I am reading. [Present Continuous]
I have read; [Present Perfect]
I have been reading. [Present Perfect Continuous]
In sentence 1, the verb shows that the action is mentioned simply, without anything being said about the completeness or incompleteness of the action.
In sentence 2, the verb shows that the action is mentioned as incomplete or continuous, that is, still going on.
In sentence 3, the verb shows that the action is mentioned as finished, complete, or perfect, at the time of speaking.
In sentence 4, the verb is present perfect continuous as the verb shows that the action is going on continuously, and not completed at this present time.