Please help me in understanding the difference between "Did not" and "have not"?
"did not" must be followed by the plain form of the verb. This is the simple past tense. did not know; did not see; did not want "have not" must be followed by the past participle.
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"did not" must be followed by the plain form of the verb. This is the simple past tense.
did not know; did not see; did not want
"have not" must be followed by the past participle. This is the present perfect tense.
have not known; have not seen; have not wanted
The simple past presents an action as finished and detached from the present moment. The present perfec