since和because作因为时的区别

Question

如题所述

Answer 1

since,
as一般放在主句的前面，since表示“既然”，表示人们已知的事实。全句的重点在主句的内容上。如：since
he
can't
answer
the
question,
you'd
better
ask
someone
else.
as表示“由于”语气较弱，全句的重点在主句的内容上。如：as
i
haven't
seen
the
film,
i
can't
tell
you
what
i
think
of
it.
because语气最强，表示“因为”，可以放在主句在前面或后面，通常表示说话人认为这种理由或原因是听的人所不知道的，全句的重点在原因上。如：he
didn't
attend
themeeting
because
he
had
toomuch
work
to
do.
for一般放在主句的后面，用来对主句补充说明理由或推断原因，有时候可以和because交替使用。它与前一句不存在因果关系。如：the
ground
is
wet,
for
it
rained
last
night.