1.表示原因
1)There
are
three
reasons
for
this.
2)The
reasons
for
this
are
as
follows.
3)The
reason
for
this
is
obvious.
4)The
reason
for
this
is
not
far
to
seek.
5)The
reason
for
this
is
that...
6)We
have
good
reason
to
believe
that...
例如：
There
are
three
reasons
for
the
changes
that
have
takenplace
in
our
life.
Firstly，people
’
s
living
standard
has
been
greatly
improved.
Secondly，most
people
are
well
paid，
and
they
can
afford
what
they
need
or
like.
Last
butnot
least，more
and
more
people
prefer
to
enjoy
modern
life.
注：如写第一个句子没有把握，可将其改写成两个句子。如：Great
changes
have
taken
place
in
our
life.
There
are
three
reasons
for
this.这样写可以避免套用中的表达失误。
2.表示好处
1)It
has
the
following
advantages.
2)It
does
us
a
lot
of
good.
3)It
benefits
us
quite
a
lot.
4)It
is
beneficial
to
us.
5)It
is
of
great
benefit
to
us.
例如：
Books
are
like
friends.
They
can
help
us
know
the
world
better，and
they
can
open
our
minds
and
widen
our
horizons.Therefore
，reading
extensively
is
of
great
benefit
to
us.
3.表示坏处
1)It
has
more
disadvantages
than
advantages.
2)It
does
us
much
harm.
3)It
is
harmful
to
us.
例如：
However，everything
divided
into
two.
Television
can
alsobe
harmful
to
us.
It
can
do
harm
to
our
health
and
make
us
lazy
if
we
spend
too
much
time
watching
television.
4.表示重要、必要、困难、方便、可能
1)It
is
important(necessary，difficult，convenient，
possible)for
sb.
to
do
sth
.
2)We
think
it
necessary
to
do
sth
.
3)It
plays
an
important
role
in
our
lif
初中英语考试写作经典句式.docx