In composed tense, should trop go before or after the main verb?
J'ai trop lu/parlé hier.
or
J'ai lu/parlé trop hier.
With beaucoup, the adverb goes before the main verb.
The second form doesn't work at all. You need to use:
J'ai trop lu/parlé hier.
You might be able to say, write:
J'ai lu/parlé hier. Trop.
But that is quite different from your initial question. There are now two sentences, the second one introducing a precision, and there's a style effect that IMHO is not in the scope of your initial question.
