It often rains in summer and it often snows in winter in this city.
7 Y; {9 m. C" S7 E9 [ 这个城市夏天经常下雨,冬天经常下雪。! N4 Z+ D+ V! p5 t2 I
4.it指距离、情况等。一般用作无人称动词的主语。/ R7 f) ?" w% }( A4 Y
例如:
6 M2 |- w( ]: V9 A& U It is five kilometers from my home to the school.
) \0 N5 u* m- M4 _+ M5 z7 Q 从我家到学校有五公里。. B) I4 Z% F5 I3 n( V. ~7 k, T- ^
It is very near from this factory to that one.
& L) J2 K$ Q: @4 M$ Y7 b6 Q 从这个工厂到那个工厂非常近。% u4 W: n/ }/ Q. D
It is a long way to the sea. 离海很远。. p% {7 ~2 P0 \
Is it well with you? 你身体好吗?
% |( i9 I; Z& h. F7 }3 y 二、it作形式主语
2 ^% i/ y9 r* X7 } 动词不定式、动名词短语起、从句在句子中起主语作用,而这一部分用词较多时,可以用it作为形式主语,放在句首代表其后所说的事实上的、真正的主语,而把真正的主语放在后面。" B$ r- o4 f2 x2 |5 S: q
1.It +谓语+动词不定式。It 作形式主语,动词不定式作真正的主语。+ b7 n( w1 O9 V: u( y7 }+ k
例如:
, C+ Q V: A6 c( k/ t) B# j It is difficult to climb a mountain. 爬山是很艰难的。
3 A$ H+ k8 q' [, U$ b It’s a good habit to do morning exercises. 作早操是个好习惯。
% A" ~: j& C5 w' e It’s important to do proper memory work in the study of a foreign language. 在学习外语时适当地做一些有助于记忆的练习是很重要的。9 d7 Z$ p! N( F4 b& w, i% K9 f# K
It is right to do so. 这样做是对的。+ ~# A/ Y Q; p4 }
2.It+谓语+动名词短语。It 作形式主语,动名词短语作真正的主语。
1 w7 t; [0 X E3 v1 J 例如: W5 k4 O o5 D; e4 d
It is dangerous playing with fire. 玩火是危险的。
/ _: M! x! H1 T" }) ? It is no use learning without thinking. 学而不思则罔。
: ~' u( ?8 I7 ]1 W' @* E5 F+ V3 g; D It’s useless arguing with a silly boy. 和笨孩子争论是没有用的。
9 }5 f7 o0 g6 V3 D6 M9 l: W 3.It +谓语+名词性从句。It 作形式主语,以that 引导的名词性从句是真正的主语。3 O, f5 T: e) r
例如:
0 `/ B' F7 Z# i9 o% [: J) J It is a pity that you didn’t see such a good film.9 e. a/ Z* i% F2 j! y
你没看这么好的电影,真可惜。$ p# x* j8 q _1 Y U( e
It is certain that we shall succeed. 我们一定会成功。
5 p+ q, M S* ]+ Q1 i It is strange that nobody knows where he lives.8 Z2 t- Z! ^1 o
真奇怪,谁也不知道他住在哪里。
7 o0 B. I4 r' K" l ~, R (It is strange that…后面可用虚拟语气。# b' {3 P9 I% D
如:It is strange that he should have made such a mistake.
6 _* n! [, `' N- Z9 z7 B3 c) _, o' { 他居然犯了这样一个错误,真奇怪。
: w* ]7 s! o$ d) Y/ [$ T% L# w It is strange that nobody should know where he lives.2 A* b* t3 ]1 a" m% t5 W# n
居然没有人知道他住在哪里,真奇怪。)
* l9 i0 W9 k- b: F. I$ S- r% x It is said that the plane will take off at ten tomorrow morning./ T1 c# A( T' o0 e0 M9 k
据说飞机明天上午十点起飞。 |