I know we must use bare infinitives with these verbs in the Active.
e.g. I saw a lady cross the street.
There are other verbs with which we are supposed to use a bare infinitive in the Active.
e.g. I wanted him to leave. If we transform this sentence into the pseudo-cleft, we see for:
What I wanted was for him to leave.
My question is can we make pseudo-cleft sentences with the verbs of perception such as see or hear? Will these sentences contain the non-finite embedded clauses or will those be transformed into the finite ones? In the case they should remain non-finite, shall we use for or not?
What I saw was for a lady to cross the street. What I saw was a lady cross the street. What I saw was that a lady crossed the street.
May we use here a gerund? What I saw was a lady crossing the street.