四级写作常用连词

both …and 两者
not only…but (also), as well as不但…而且
either…or
not…but…
so, therefore
therefore, then, yet
so…that
such…that
so...as
as ...as
as... form then
before
not only ..but also
yet
since
as ...as

as ...as
as... form then
before
not only ..but also
yet
so...as
since
by