The above sentences are just examples. What I want to know
is what form of verb should be used after "after".
>Before doing that, here's something else you have to do.
>Before do that, here's something else you have to do.
>
>The above sentences are just examples.
The second should be preceded by an asterisk, to indicate that
it's ungrammatical.
> What I want to know
>is what form of verb should be used after "after".
The "-ing" participal/gerund or whatever it's called (just
replace "before" in the first example). Or the indicative, with
an appropriate noun pronoun intervening.
> Before doing that, here's something else you have to do.
Correct.
> Before do that, here's something else you have to do.
Wrong.
> The above sentences are just examples. What I want to know
> is what form of verb should be used after "after".
After doing that...
After you do that ...
Etc.
--
Richard
The second is incorrect in the verb "do"; it could be fixed with
the addition of a pronoun such as "I" or "you." The first is
correct, but there are some who would argue that the participle
"doing" is wrongly attached to "here." (It's obvious it's
supposed to refer to "you," but your grammar says otherwise.)
----NM