The auxiliary verb "have" (have, had, will have) is used with the so-called "perfect tenses."
While "looked" is the ordinary past tense of to look, the present perfect tense would be "have looked" or "has looked" (third-person singular).
Using HAVE means that the process of looking has taken place already (present perfect actually referring to the past), or it can be an intensifier meaning "indeed."
(e.g. You should look. / I have looked!)
It also allows a negative statement that is not possible for the simple past tense (archaic I looked not), although it can be done with the past tense did.
I looked / I have looked / I have not looked
I look / I don't look (present conditional) or I didn't look (past tense)
"Have looked" is the present perfect tense and indicates that the action of looking started in the past and has relevance to the present. "Looked" is the simple past tense and indicates that the action of looking occurred and was completed in the past.
The main difference between cats and dogs is their preferred method of communication.
"Downward" is an adjective used to describe the direction of movement, while "downwards" is an adverb that modifies a verb indicating a downward action. For example, "The elevator is moving downward" (adjective) versus "She looked downwards" (adverb).
irony
"Difference" refers to the way in which two or more things are not the same, while "different" is the adjective used to describe something as not being the same as something else. Essentially, "difference" is a noun and "different" is an adjective.
The past tense of "looked" is "looked."
People were judged by how they acted or what they looked like.
The former is to be looked at, the latter to be listened to.
i dont know thats why i looked at this page
i dont know thats why i looked at this page
difference between see and look.you could make out through these sentences.1)I saw him stealing those forks.2)He looked strange.
i dont know thats why i looked at this page
The correct name is Hatshepsut. The other one is a misspelling. There in no other name that looked like her.
i dont know thats why i looked at this page
i dont know thats why i looked at this page
i dont know thats why i looked at this page
i dont know thats why i looked at this page
the poor where misteated by the rich because the rich always looked down on poor people:)