Would someone be so kind as to enlighten me as to which form is generally preferred: "I have forgot" or "I have forgotten"? I was under the impression that "forgotten" was the Americanized version of the word and that "forgot" was the original form. Am I wrong to think that?

I'm well aware that forgot is the simple past form, but I'm quite positive that it is also used as a past participle.

http://dictionary.reference.com/search?q=forgot

I have forgot /forgotten are both correct. The latter is more formally used.

I forgot to do the laundry last night. - forgot is used as simple past, ok

I may have /forgot forgotten a lot of Chinese in written form, but when  I see them I still recognize their meanings. Both forgot and Forgotten can be used as past participle.

NanakiXIII wrote:

Thanks, Goodman. But I was wrong, then, in my assumption that "forgotten" is an Americanization or at least a newer form?

I know 'forgot' as the simple past tense and not as the past participle of 'forget'.  According to the Oxford Dictionary, 'forgot' is sometimes used as the past participle "chiefly in the US".  Webster's Dictionary also lists 'forgot' as an alternative for 'forgotten'.  However, if that is actually true, then the usage must be fairly regional or they are simply referring to relatively limited informal or poetic usage.  To me, 'forget' has only one correct past participle and that is 'forgotten'.  Using 'forgot' as the past participle' sounds (at best) informal to me.

A well-known usage of 'forgot' as a past participle that comes to mind is in the 18th century song Auld Lang Syne, but that was not written by an American.

My BNC search for "have forgot" resulted in only one hit:
"I must have forgot."
Likewise, a BNC search for "has forgot" also resulted in only one hit:
"Our Michael's forgot where he, has forgot where he's hid his Nintendo tape."

By way of comparison, BNC searches for "have forgotten" and "has forgotten" result in 323 and 64 hits respectively.


A search of the New York Times resulted in only 4 hits for "has forgot", and 13 hits for "have forgot".
By way of comparison, a search of the NY Times for "has forgotten" results in 749 hits, and there are 2099 hits for "have forgotten".

So, the usage of forgotten as the past participle seems to be pretty standard on both sides of the pond.

If you look at the etymology of the word forget, it would seem logical that the -en ending is nothing new. 
http://www.etymonline.com/index.php?term=forget

I've read that the use of 'gotten' as the past participle of 'get' is in fact an older usage that has been preserved in AmE, and that the British use of 'got' as a past participle is in fact a newer usage.



EDIT:
Hi Mr. P.   You posted while I was busily doing all of my online searches.  I really don't think 'forgot' is typically viewed (or even used) as a "correct" past participle in AmE.  You do hear it used that way informally -- but to me even the informal usage is relatively rare.  That's my gut feeling.