Re: PIE meaning of the Germanic dental preterit

--- In cybalist@yahoogroups.com, Piotr Gasiorowski <gpiotr@...> wrote:

> Common origin requires formal homology (the historical identity of
> "substance", not function). If one language forms periphrastic verb
> forms using forms of *kWer- or *h1es-, another using *dHeh1-, and still
> another one using *kap-, this indicated convergent but independent
> development, not common origin.

What about the example of Portuguese _ter_ but French _avoir_ to form
the perfect tenses? Do not these forms have a common origin?

(I am not at all sure about the relationship of the English _be_ and
_get_ passives.)

Richard.