Unit 6
Sunshine for all
“
It
is+adj.
(
+of
sb
)
+to
do
sth
”
句型
此句型意为
“
某人做某事真是
/
太
……
了
”,
其中
It
是形式主语
,
没有具体的意义
,
真正的主语是后面的动词不定式短语。该句型中的形容词描述的是人的特征、品质等。常用于此句型的形容词有
good,kind,clever,right,nice,rude,wise,wrong,honest,generous,careful,careless,silly
等。例如
:
It
’
s really very kind of you to help me with the housework on Sundays.
你在星期天帮我做家务真的太好了。
注意
:
1.
在
“It is+
adj
.( +of sb )+to do sth”
句型中
,of
后的宾语与动词不定式之间存在逻辑上的主谓关系
,
一般都可以转换成一个以
of
后的宾语为主语的句子。例如
:
It is foolish of them to do so.
→They are foolish to do so.
他们这样做真是愚蠢。
2.
该句型在表示不定式的否定意义时
,
需要在不定式前加
not,
即
“It is+
adj
.( +of sb )+not to do sth”
。例如
:
It
’
s rude of you not to be polite to the old.
你对老人不礼貌真是粗鲁。
“
It
is+adj.
(
+for
sb
)
+to
do
sth
”
句型
此句型意为
“
对某人来说做某事是
……
的
”,
其中
It
是形式主语
,
没有具体的意义
,
真正的主语是后面的动词不定式短语
,
介词
for
后面的人作动词不定式短语的逻辑主语。该句型中的形容词说明要做的事情本身的特点
,
如可能性、必然性或难易程度等。常用于此句型的形容词有
important,necessary,possible,impossible,dangerous,safe,easy,hard,difficult,meaningful
等。例如
:
It
’
s necessary for him to do so.
他有必要这么做。
It
’
s impossible for the children to finish the homework in such a short time.
孩子们不可能在这么短的时间内完成作业。
(
D
)4.It
’
s meaningful
money
the children in need.
A.to raise;support
B.raise;to support
C.raise;support
D.to raise;to support
(
A
)5.It is easy for a stranger
in a big city.
A.to get lost B.got lost
C.get lost D.to getting lost
Ⅱ
.
根据句意用介词
for
或
of
填空
1.It is necessary
for
us students to improve the listening ability.
2.It was kind
of
you to give me your seat on the bus.
3.It is dangerous
for
children to swim in the river alone.
4.It is not wise
of
the mother to give her son so much money.
5.It is really hard
for
them to climb such a high mountain.
Ⅲ
.
同义句转换
,
每空一词
1.To keep our classroom clean is very important.
It
’
s
very
important
to
keep our classroom clean.
2.She is very generous to give each of us a gift.
It
’
s
very
generous
of
her to give each of us a gift.
3.Donating money to the elderly is meaningful for us.
It
’
s
meaningful
for
us
to
donate
money to the elderly.
4.Suzy is very kind and she likes to take care of others.
It
’
s very kind
of
Suzy
to
take care of others.
5.To think before you speak is always wise.
It
’
s
always
wise
to
think before you speak.
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