The
Past
Perfect
is
an
____________________
form
which
is
built
up
by
means
of
the
____________________
verb
____________________
____________________
in
the
Past
____________________
and
the
____________________
of
the
notional
verb
.
The
same
auxiliary
is
used
to
form
the
____________________
and
negative
forms
.
The
Past
Perfect
Continuous
is
an
analytical
form
which
is
built
up
by
means
of
the
auxiliary
verb
____________________
____________________
in
the
Past
____________________
and
the
____________________
-
____________________
of
the
____________________
verb
.
