1It
is
said
that
据说(=people
say
即大家都这么说)that
后面接一个从句,that
可省略。例:
It
is
said
(that)
he
is
only
13
years
old据说他才13岁。
=He
is
said
to
be
only
13
years
old他据说才13岁。
其它几个的用法都是一样。
2It
is
thought
(that)大家认为有人认为that后同样接一个句子。例:
It
is
thought
(that
)he
is
the
greatest
person
in
the
world他被认为是世界上最伟大的人(同样请写出另两种表达)。
3It
is
known
that
众所周知
4It
is
reported
that
据报道有报道称
5It
is
estimated
that
据估计
6It
is
believed
that
据信大家相信
It
作形式主语常见句型
1It + be +
形容词
+ that-
从句
可用于此句型的形容词有
: wonderful, true
,
good
,
right
,
wrong
,
(
un
)
important
,
useless
,
surprising
,
disturbing,frightening,alarming,clear
,
unusual
,
lucky
,
certain, necessary
等。
如:
①
It is quite certain that he will be at the meeting
他将出席会议是无疑的。
②
It is surprising that he came late to school this morning
他今天早上迟到真令人惊讶。
③
It is important that we (should) study hard
我们努力学习是很重要的。
注意
:
该句型中的形容词是
(
un
)
important, necessary
等时,
从句应为
(should )+
动词原
形。
It is important that we (should) learn English well
It is necessary that he (should) remember these words
2It + be +
名词
+ that-
从句
适用该句型的名词
(词组)
有
: a pity
,
an honor
,
a good thing
,
a fact
,
a surprise
,
a question,
a shame,a custom, a truth,our hope, no wonder, good/bad manners
等。如:
①
It is a pity (that) you missed the sports meeting last week
你错过了上周的运动会太
可惜了。
②
It is a fact that English is being accepted as an international language
事实上英语已经
被作为一种国际语言而接受了。
3 It
+
seem
/
appear
/
happen
的适当形式+
that
从句。
①
It seems that there is a big waste pipe coming down from the town
②
It appeared that he was calm, but inside his heart was beating wildly with fear
4 It + be +
过去分词
+
主语从句,这类过去分词有:
announced, believed, expected, hoped,
decided, reported, said, shown
等,
如:
It is reported that 16 people were killed in the earthquake
It is not decided who will give the operation to the patient
5 It is time ( about time ,high time ) that
该句型中
that
后的从句应该用虚拟语气,值得注意的是①
常用过去时态表示虚拟.②
有时也用
should +
动词原形,
should
不能省。常译为"是(正是)
.
.
.的时侯.
.
."。
It is time that children should go to bed
= It is time that children went to bed
6 It is the first ( second ) time that
用完成时态。至于用什么完成时态,
由主句的谓语动词的时态决定。如果是一般现在时,后
面从句用现在完成时态;
如果是一般过去时,
后面从句则用过去完成时态。
该结构中
that
可
以省去;
it
有时用
this
替换.常译为"是第一(二)
.
.
.次.
.
."。
It is the first time I have been here
= This is the first time I have been here
7 It + be + adj/ n (for sb / of sb) + to do sth
该句型中的形容词通常是表示事物的特点或
特征的如
difficult
,
hard
,
easy
,
impossible
,
necessary
,
important
等,此时用
for
;或表示人
的性格特征或特点的如
nice
,
good
,
bad
,
kind
,
silly
,
foolish
,
wise
,
clever
,
careless
,
rude
,
brave
,
cruel
,
careful
,
grateful
等,这时要用
of
。如:
①
It is foolish of you to give up such a good chance
②
It is necessary for college students to master at least a foreign language
it isn't的读音为[ɪt] ['ɪznt]。
1、is的用法:
is的过去式是was。is是系动词,也称联系动词,是用来辅助主语的动词。它本身有词义,但不能单独用作谓语,其后必须跟表语,构成系表结构说明主语的状况、性质、特征等情况。
在英语中,系动词的功能主要是把表语和它的主语联系在一起,说明主语的性质、特征、品性或状态。
2、not的用法:
not的基本意思是不,没有,通常用于否定句中,位于动词be,have,has或情态动词之后,或与之一起构成缩写形式,如:isn't,don't,won't等。
not后可接动词的非限定形式:动词不定式,动名词或分词。
扩展资料:
重点词汇解释:
1、it
pron [指无生命的东西、动物、植物]它;这;那
pron 指已提到或将提及的事物、活动、经验、抽象观念等
pron 在不分性别或情况不详时指代
pron 作无人称动词的主语,表示天气、时日、距离、状态、温度等等
双语例句:
Does it really matter who did it?
是谁干的真的很重要吗?
2、not
adv 表示否定,不
n “非”(计算机中逻辑运算的一种)
双语例句:
Not everybody agrees
不是每一个人都同意。
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