-
It
句型归纳总结
I
．
It
作形式主语的句型
①
It
+ be + adj (kind , wise , careless,
clever
?
) + of sb
to do sth
Eg: It is wise of him to make
such a
decision.
他做出这样的决定是明智的。
②
It + be +
adj(easy , safe , common , normal
?
) + for sb to do sth
该句型中
adj
若为
imp
ortant, necessary, natural, possible, strange,
vital, essential
等可改为从句
,
从句用
should+
动词原形。
.Eg: It
?
s
very dangerous for children to play with fire.
It is important for us to learn English
well.
(= It is important
that we (should) learn English well.)
③
It
+ be +V-ed( reported, believed, said, suggeste
d
?
)
+ that
从句
该句
型中：
⑴若
V-ed
为
reported, believed, said
等常译为
“
据报道
”
，
“
据认为
”
，
“
据说
”
。
< br>⑵若
V-ed
为
suggest
ed, ordered, demanded,
insisted
< br>等表示“建议”
,
“命令”的词，从句要用虚拟语气
(should)
+
动词原形。
Eg: It is suggested that the
book (should) be revised.
It
?
s said that
Tom has been back from abroad. (=Tom is said to
have been back from abroad.)
④
It + be + n (a
pity, a shame, a fact , good
new
s
?
) + that
从句
:
该句型中，从句一般用
(should) +
动词原形，表示出乎意料，常译为＂竟然＂。
Eg
:
It is a pity that such a thing ( should
) happen in your class.
这种事竟然发生在你们班上，真是遗憾！
⑤
It is
useless/no use/no good /pleasure+ doing sth
此句型中的
it
是形式主语
,
其后的动名词短语是真正的主语
,
译为
“
做
…
没
有用
”
。
Eg : It
?
s
useless arguing with him further.
// It
?
s no use
talking with him, because he
won
?
t listen.
⑥
It takes sb.
... to do sth.
该句型中
< br>it
是形式主语，真正的宾语是
to do
sth
，常译为＂做．．．要花费某人．．．＂。
Eg: It took thousands of people many
years to build the Great Wall.
II
．
It
作形式宾语的句型
1. sb
find/ believe/ think/ feel/ consider/ make + it
+n/adj +to do
或从句
该句型中的
it
作形式宾语。为了记
忆方便我们可称该句型为“
6123
结构”
。
6
指主句中常用的动词：
think, believe,
make, find,
consider,
feel
；
1
指的是形式宾语
it
；
2
指的是宾补的两种形式：形容词或名词；
3
< br>指的是真正宾语的三种形式：不定式短语，
动名词短语或
that
引导的宾语从句。
Eg:
We think it our duty to clean our classroom every
day.
He felt it important learning
English well.
They found it difficult
that they would finish their work in two days.
2.
主语＋
hate / dislike / love /
like
＋
it
＋
when
－从句
Eg: I hate it when people speak with
their mouths full.
3.
主语＋
appreciate
＋
it
＋
if
－从句
Eg: I really appreciate it if you could
help me with my math.
4.
sb. depend on/count on/rely
on/
see
to(
负责，确保
) / answer for it
tha
t
?
Eg: You may rely on it that he
won
’
t be late.
You
must see to it that the doors are locked before
you leave the lab.
5.
sb. take it for granted
tha
t
?
认为??是理所当然的
Eg:
I take it for granted that he will succeed.
III.
It
引导的时间句型
⑴
It + is/has
been+
时间段
+
since
引导的时间状语从句
:
该句型中从句一般用过去时态，句意为
“
自从
......
以来已多久了
”<
/p>
Eg : It is 5 minutes since
the bus left.
公汽开走已有
5
分钟了
⑵
It + be
（
will/was<
/p>
）
+
时间段
+
before
引导的时间状语从句
:
该句型中，主句谓语动词
be
若为肯定
式，意为
“
过多久才
......”<
/p>
；若为否定式时，意为
“
没过多久就
......”
。
Eg : It will be long/ 3 hours before he
comes back.
要过三个小时他才会回来
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