It-的用法总结 本文关键词：用法
It-的用法总结 本文简介：It的用法总结一.代词:1)指代上文2)指代this/that3)指代未知性别的婴儿或孩子或身份不明的人4）指代时间/地点/天气/温度/距离/环境Whatdoes“it”referto?1.Itgetsdarkveryearlyinthewinter.2.Whatwillyoucallitifit’
It-的用法总结 本文内容：
It
的用法总结
一.
代词:
1)
指代上文
2)
指代this/that
3)
指代未知性别的婴儿或孩子或身份不明的人
4）指代时间/地点/天气/温度/距离/环境
What
does
“it”
refer
to?
1.It
gets
dark
very
early
in
the
winter.
2.What
will
you
call
it
if
it’s
a
boy?
3.I
love
spring---It’s
a
wonderful
time
of
the
year.
4.It’s
less
than
100
kilometres
from
here
to
Jinan.
5.When
the
factory
closes,it
will
mean
500
people
losing
their
jobs.
6.What’s
this?
It’s
a
cat.
7.It
has
snowed
much
this
year.
注意：it,one和that,those作替代词的区别
(1)The
book
in
your
bag
is
very
interesting.
Can
I
borrow
?
(2)
The
book
in
your
bag
is
more
interesting
than
______
on
the
desk.
(3)
The
weather
here
is
much
colder
than____
in
Nanjing.
(4)
The
books
are
free.
You
can
take____
free
of
charge.
(5)
The
books
in
the
bag
are
better
than
_____
on
the
desk.
it
表示特指，与前面指代的名词是同一个
one
表示泛指，指代单数可数名词，与指代的名词同类但不同一个
that表示特指，相当于the+名词单数，与指代的名词同类但不同一个
those表示特指,相当于the+复数可数名词,与指代的名词同类但不同一个
it指时间的几个重要句式
【句式1】it
is
/has
been
+
段时间
+
since
----自从----多久了
?
It
is
/
has
been
3
years
since
I
visited
your
company.
【句式2】It
was
+
段时间
+
before
---过了多久-----才---
?
It
was
3
hours
before
he
realized
the
truth.
【句式3】It
will
be
+段时间
+
before
--要过多久----才--
?
It
will
be
3
months
before
they
complete
the
bridge.
【句式4】it
was
+
点时间
+
when
---某事发生于---某一时刻—
It
was
10
o’clock
when
the
big
fire
broke
out
.
【句式5】It
/this
is/was
the
+序数词+
time
+
现在完成时态/过去完成时-
（表示某人第几次做某事）
?
It
is
the
second
time
I
have
heard
of
this
.
【句式6】It
is
time
(about
time
/high
time
)
that
sb.
did
/should
do
（该是干……的时候了）
It
is
time
that
we
went
to
school.
对比训练
1.
It
will
be
years
____
we
meet
again.
2.
It
is
ten
years
____
I
came
to
this
town.
3.
It
is
ten
years
ago
____
I
came
to
this
town.
4.
It
is
the
third
time
___
I
_________
(visit)
to
this
town.
5.
It
was
2
am.
___Tangshan
earthquake
took
place.
A.
whenB.
thatC.
beforeD.
since
二.
引导词:
1)形式主语
2)形式宾语
3)强调句
It
作形式主语
基本结构：
It
+
be/v.
+……+
(for
sb/
of
sb.)
to
do
sth
(动词不定式)
doing
sth.（动名词短语）
that/
whether
…（从句）
注意1：:
For
or
Of
?
1.
It
is
important
____
us
to
learn
English
well.
2.
It
is
very
kind
____
you
to
help
me
learn
English.
3.
It
is
foolish
____
you
to
believe
him.
4.
It
is
necessary
____
you
to
go
over
this
lesson.
注意2;
It
何时代替doing?
It
+be
+
no
use
no
good
+
doing
sth
a
waste
of
time
……
翻译：
1.
和他争论没有用。_______________________________
2.
打电脑游戏是浪费时间。_____________________________________________
注意3：that
后的从句要用虚拟语气（should
+
动词原形），should
可以省
(1).
It
is
a
pity
(a
shame
/an
honor
/a
good
thing/a
fact
/a
surprise/.
)
that
.
(2).
It
is
important
(
necessary，strange，natural.)
that
.
(3).It
is
insisted(ordered/commanded,suggested/advised/proposed,demanded/requested/required.
)
that
.
注意4：He
is
said/
reported
to
have
gone
abroad.
=It
is
said/reported
that
he
has
gone
abroad.
All
the
students
are
believed
to
have
done
their
best.
=It
is
believed
that
all
the
students
have
done
their
best.
注意5：It
+
vi.(不及物动词)
+
that
It
happens
that
he
was
out.
碰巧…
It
seems
that
he
doesn’t
know
the
secret.
好像…
It
appears
that
he
is
honest.
好像…
It
occurred
to
me
that
I
lost
my
purse
on
the
bus.
我突然想到…
It
doesn’t
matter
whether
he
will
come
or
not.
…没有关系
It作形式宾语
基本结构：
动词+
it
+
形容词/名词
+（
for/of
sb
+）to
do(动词不定式)
think
doing
sth（动名词短语）
believe
that
从句（从句）
find
necessary
feel
possible
consider
natural,suppose
no
use/no
good/
make
a
waste
of
time
keep…
……
I
think
it
important
to
make
a
summary
in
time.
I
find
it
a
good
habit
that
we
make
a
summary
in
time.
He
felt
it
no
use
learning
English
without
speaking
it.
it作形式宾语的特殊句型：V.+
it
+
if/that/when
动词有喜欢类：enjoy,like,appreciate,prefer
讨厌类：hate,dislike
I
would
appreciate
it
if
you
paid
in
cash.
I
like
it
in
the
autumn
when
the
weather
is
clear
and
bright.
I
hate
it
when
people
talk
with
their
mouths
full.
It引导强调句
1.
基本结构：It
is/was
+
被强调部分
+
that
/who(人)
.
例如：他是因为病了才没能帮我
It
was
because
he
was
ill
that
he
couldn’t
help
me.
Was
it
because
he
was
ill
that
he
couldn’t
help
me?
Why
was
it
that
he
couldn’t
help
me?
2.
not…until句式的强调句型：
It
is/was
not
until
…+
that
.
“直到…才…”
例如：He
didn’t
get
home
until
it
was
dark.
，
三．用在固定结构中的it
take
it
easy.
别紧张
take
it
for
granted
认为···理所应当
believe
it
or
not
信不信由你
make
it
成功；完成某事
forget
it
忘了吧；
没关系
worth
it
有好处，值得做
It/That
all
depends.
要看实际情况而定
when
it
comes
to····
当谈到…，但提到…
got
it
=understand
理解，明白
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