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一、强调句
(一)强调句句型
1
、陈述句的强调句型:
It is/ was +
被强调部分(通常是主语、宾语或状语)
+ that/ who
(当强调主
语且主语指人)
+
其它部分。
e.g. It was yesterday that he met Li Ping.
2
、一般疑问句的强调句型:同上,只是把
is/ was
提到
it
前面。
e.g. Was it yesterday that he met Li Ping?
3
、特殊疑问句的强调句型:被强调部分(通常是疑问代词或疑问副词)
+ is/ was + it + that/ who +
其它部分?
e.g. When and where was it that you were born?
4
、强调句例句:针对
I met Li Ming at the railway station yesterday.
句子进行强调。
强调主语:
It was I that (who) met Li Ming at the railway station yesterday.
强调宾语:
It was Li Ming that I met at the railway station yesterday.
强调地点状语:
It was at the railway station that I met Li Ming yesterday.
强调时间状语:
It was yesterday that I met Li Ming at the railway station.
5< br>、注意:构成强调句的
it
本身没有词义;强调句中的连接词一般只用
that , who
,即使在强调时间状语
和地点状语时也如此,
that, who
不可省略;强调句中的时态只用两种,一般现在时和一般过去时。原句
谓语动词是一般过去时、过去完< br>
成时和过去进行时,用
It was …
,其余的时态用
It is …
。
(二)
not … until …
句型的强调句
1
、句型为:
It is/ was not until +
被强调部分
+ that +
其它部分
e.g.
普通句:
He didn’t go to bed until/ till his wife came back.
强调句:
It was not until his wife came back that he went to bed.
2
、注意:此句型只用
until
,不用
till。但如果不是强调句型,
till, until
可通用;因为句型中
It is/ was
not …
已经是否定句了,
that
后面的从句要用肯定句,切勿再用否定句了。
(三)谓语动词的强调
1
、
It is/ was … that …
结构不能强调谓语,如果需要强调谓语时,用助动词
do/ does
或
did
。
e.g. Do sit down.
务必请坐。
He did write to you last week.
上周他确实给你写了信。
Do be careful when you cross the street.
过马路时,务必(千万)要小心啊!
2
、注意:此种强调只用
do/ does
和
did
,没有别的形式;过去时用
did
,后面的谓语动词用原形。
二、
It
的用法
(一)作人称代词
1
、
it
代替前面(或后面)的单数名词或分句等所表示的事物。
e.g. You cannot eat your cake but have it.
(
it
代替前面的
cake
)
Although we cannot see it, there is air all around us.
(
it
代替后面的
air
)
They say he has left town, but I don’t believe it.
(
it
代替前面
They…town
分句中的情况)
2
、代替有生命但不能或不必分阴阳性的东西(包括婴儿)。
e.g. Yesterday we saw a big tree. It was fully twenty metres high.
(
it
代替前面的
tree
)
The baby cried because it was hungry.
(
it
代替前面的
baby
)
3
、在某些习惯说法中,可以代替人。
e.g. ---- Someone is knocking at the door, Peter. ---- Who is it? ----
It’s me.
---- Who are singing? ---- It is the children.
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---- The light is still on in the lab. It must be the third-year students doing the experiment.
4
、
it
与
one
的 区别:这两个词都可以代表前面说过的名词,但
it
用于同名同物的场合;
one则用于同名
异物的场合。
e.g. ---- Do you still have the bicycle? ---- No, I have sold it.
---- Is this knife yours? ----
No. It is Xiao Zhang’s. Mine is the one on the desk.
5、
it
与
that
的区别:两词都可代替某一特定名词,但
th at
指同一类,并非同一个。
e.g. The climate of South China is mild
(温和的)
; I like it very much.
(
it
指
the climate of South
China
)
The climate of South China is much better than that of Japan.
(
that
指
the climate
)
(二)作无人称代词
it
作无人称代词时,
除了句中找不到它所 代表的词语外,
另一个特点是它后面的内容都是表示天气、
时间、
距离、度量衡及情况 等。
It is fine (rainy, windy, etc.).
It is noon.
It is a half hour’s walk to the factory.
It is eighteen square metres in area.
What does it matter?
(三)作强调词,构成强调结构
用以帮助改变句子结构,
使句子的某一成分受到强调。
“It is (was) +
所强调的成分
+ that (who) +
其
它成分。
”
在这个句型中,
it
本身没有词义。详见
“
一、强调句
”
。
(四)引导词
it
作形式主语(宾语)
为了使句子平衡,常采用形式主语(或宾语)
it
,而把真正的主语(或宾语)置于 句子后面。通常引导词
it
与它所代替的句子成分中间要夹有某些词。
e.g. It takes half an hour to go there on foot.
(
It
与
to go there on foot
之间夹有
takes half an
hour
四个词)
We thought it strange that Mr Smith did not come last night.
(
it
与
that
从句中间夹有
strange
)
但有时
it
与所替代部分之间并不夹有其它词。
e.g. You may depend on it that they will support you.(因为介词
on
之后一般不直接接
that
引导
的宾语从句。注 意:
it
不是多余的,不能当作错句)
练习一、强调句、
It
的用法
1. My bike is missing. I can’t find ____ anywhere.
A. one B. ones C. it D. that
2. ----
Who’s th
at? ---- ____ Professor Li.
A. That’s
B. It’s
C. He’s
D. This’s
3. ____ was Jane that I saw in the library this morning.
A. It B. He C. She D. That
4. ---- Have you ever seen a whale alive? ----
Yes, I’ve seen ____.
A. that
B. it C. such D. one
5. The color of my coat is different from ____ of yours.
A. this B. that C. it D. one
6. ____ will do you good to do some exercise every morning.
A. It B. There C. Those D. You
7. We think ____ our duty to pay taxes to our government.
A. that B. this C. its D. it
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8. The climate of Shanghai is better than ____ of Nanjing.
A. that B. it C. which D. what
9. ____ four years since I joined the Army.
A. There was B. There is C. It was D. It is
10. How long ____ to finish the work?
A. you’ll take
B. you’ll take it
C. will it take you D. will take you
11. It was through Xiao Li ____ I got to know Xiao Wang.
A. who B. whom C. how D. that
12. It was in the rice fields ____ we had our league meeting.
A. where B. that C. in which D. on which
13. It was on October 1st ____ new China was founded.
A. which B. when C. as D. that
14. Was it because he was ill ____ he asked for leave?
A. and B. that
C. that’s
D. so
15. Mary speaks in a low voice; ____ is difficult to know what she is saying.
A. it B. that C. so D. she
16. It was ____ I met Mr Green in Shanghai.
A. many years that B. many years before C. many years ago that D. many years when
17. ____ is not everybody ____ can draw so well.
A. It, all B. It, that
C. There, who D. There, that
18. So ____ that no fish can live in it.
A. shallow is the lake B. the lake is shallow C. shallow the lake is D. is the lake shallow
三、省略
为了使讲话和行文简洁,句中某些成分有时可省略。省略可分以下几种情况:
(一)简单句中的省略
1
、省略主语:祈使句中主语通常省略。其它省略主语多限于少数现成的说法。
e.g. (I) Thank you for your help.
(括号内为省略的词语,下同)
(I) see you tomorrow.
(It) Doesn’t matter.
2
、省略主谓语或主谓语的一部分。
e.g. (There is) No smoking. (Is there) Anything wrong? Why (do you) not say hello to him?
3
、省略作宾语的不定式短语,只保留
to
。
e.g. ---- Are you going there? ----
I’d like to (go there).
He did not give me the chance, though he had promised to (give me the chance).
注意:如果该宾语是
be
动词或完成时态,则须在to
之后加上
be
或
have
。
e.g. ---- Are you an engineer? ---- No, but I want to be.
---- He has
n’t finished the task yet.
---- Well, he ought to have.
4
、省略表语。
e.g. ---- Are you thirsty? ---- Yes, I am (thirsty).
5
、同时省略几个成分。
e.g. Let’s meet at the same place as (we met) yesterday.
---- Have you finished your work? ---- (I have) Not (finished my work) yet.
(二)并列句中的省略
两个并列分句中,后一个分句常省略与前一分句中相同的部分。
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