I'm pretty certain that emsr2d2 meant to write "full infinitive" instead.And if you want to avoid the issue, you can use "I used not + bare infinitive".
When I was acquiring English, we said "I used not eat fish ..." etc, never "I used not to eat fish ...".
?!
Where on Earth did you acquire that from?!
Well, basically from everyone around me who spoke English!
I'm pretty sure that my relatively standard Home Counties English isn't an obscure dialect!
Also, it's very likely that "I didn't use to + infinitive" was (and still is) more common.
It sure isn't an American thing.I also assume (possibly wrongly) that it is a uniquely British thing, right?
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