let
us=let's
cannot=can't
could
not=could't,
must
not=must't
need
not=need't
I'd
like
to=I
would
like
to
I'm=I
am
he
is=
he's
she
is=she's
it
is
=it's
they
are=they're
there
is=there's
there
are=there're
do(es)
not=do(es)n't
will
not=won't
should
not=should't
this/that
is=this/that
's
these/those
are
=these/those're
现在只能想起这么一点,如果想起来了在加