表示原因：(cause)
because，
because of，
as，
since，
for，
owing to，
due to，
on account of，
on the ground of，
as a result of.
表示结果：(result)
thus，
so，
consequently，
hence，
therefore，
accordingly，
as a result，
for this reason，
as a consequence，
on that account，
it follows that.
