____________________
are
____________________
that
express
____________________
or
____________________
in
the
____________________
,
____________________
,
or
____________________
.
The
three
simple
tenses
are
the
____________________
,
the
____________________
,
and
the
____________________
.
The
present
simple
is
used
to
talk
about
____________________
or
____________________
.
The
past
simple
is
used
to
talk
about
____________________
in
the
past
.
The
future
simple
is
used
to
talk
about
actions
that
will
happen
in
the
future
.
Each
simple
tense
has
its
own
verb
form
,
which
is
created
by
adding
an
-
s
,
-
ed
,
or
-
will
to
the
____________________
of
the
verb
.
For
example
,
in
the
present
simple
,
we
add
-
s
to
the
base
form
of
the
verb
for
____________________
.
In
the
past
simple
,
we
add
-
ed
to
____________________
,
and
use
the
____________________
for
____________________
.
In
the
future
simple
,
we
use
the
____________________
'will'
before
the
base
form
of
the
verb
.
Understanding
and
correctly
using
simple
tenses
is
essential
for
____________________
in
____________________
.