it用作形式主语代替动名词主要用于哪些句式

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it用作形式主语代替动名词的用法主要见于以下句式：1.
It
is
no
use
(no
good,
fun,
great
fun,
a
new
experience,
a
great
honour,
etc)
doing
sth。如：It
is
no
good
talking.
空谈是没有用的。It’s
fun
working
for
him.
为他工作很有意思。It’s
great
fun
sailing
a
boat.
扬帆驾舟十分有趣。It’s
no
use
shouting
at
him—he’s
deaf.
向他叫喊是没有用的——他耳聋。It
has
been
a
great
honour
your
coming
to
visit
us.
你来看望我们是极大荣幸。2.
It
is
good
(nice,
useless,
interesting,
pleasant,
tiring,
etc)
doing
sth。如：It
is
useless
speaking.
光说没有用。It
was
pleasant
sitting
there.
坐在那里很愉快。It’s
so
nice
sitting
here
with
you.
和你坐在一起真是愉快。It’s
good
hearing
English
spoken.
听到人讲英语，我很高兴。It’s
terribly
tiring
working
late
like
this.
这样干到深夜是非常累人的。3.
it
is
worth
while
doing
sth。如：It’s
worth
while
doing
the
work.
这项工作值得做。Do
you
think
it’s
worth
while
quarrelling
with
me?
你认为和我吵值得吗?
4.
其他句式。如：It
doesn’t
matter
wasting
a
little
money.
浪费一点钱没有关系。It
felt
funny
being
dressed
like
a
peasant
girl.
打扮成村姑感到有点怪怪的。What’s
it
like
being
married?
结婚是什么味道。
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