It often rains in summer and it often snows in winter in this city.' y) k$ K5 k' o7 @4 o ^( g
这个城市夏天经常下雨,冬天经常下雪。; v! Y' A: w- O5 y# V) w
4.it指距离、情况等。一般用作无人称动词的主语。0 N6 w; C3 m3 s$ }9 m& R4 s6 r
例如:5 f, k; k) {( B r6 Y. D1 S9 M: z2 @
It is five kilometers from my home to the school.
7 Z: K/ `1 V. G% Y9 T! A6 Y( C 从我家到学校有五公里。
! B. @; r) M# a: o8 ] It is very near from this factory to that one.2 L% X# @+ f% W! v2 P, P3 F4 ^
从这个工厂到那个工厂非常近。
4 {1 K+ Q" ^9 u' ~" ~% _5 z1 @ It is a long way to the sea. 离海很远。
9 V- Y2 z4 \- ~. p7 Z8 J Is it well with you? 你身体好吗?
: M% {+ i9 ?. j& u 二、it作形式主语" Y$ r0 ^5 p H2 x
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。
* W& h' ^) q$ X 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。$ @, T. A% }, ]# h8 _5 z: I# R; |% s
例如:
g% C3 }. i6 a0 t W# Z It is difficult to climb a mountain. 爬山是很艰难的。
, D& b% ~, O+ ^& e It’s a good habit to do morning exercises. 作早操是个好习惯。
. I x: e2 D- @: L4 j1 H 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。
7 q: w+ w$ x4 A4 s+ c' o It is right to do so. 这样做是对的。
* w& Y1 o/ y4 q& ^ 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。# v4 t' q' G, n+ k1 T
例如:
9 P; }8 b; Q+ D/ a# B/ { It is dangerous playing with fire. 玩火是危险的。
( O6 Y2 [4 s5 {6 a1 x0 N: j e0 K4 _ It is no use learning without thinking. 学而不思则罔。3 z# w" R* a: a
It’s useless arguing with a silly boy. 和笨孩子争论是没有用的。
& u! Y o/ J, `" K 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。2 g8 T5 K( s* K
例如:" Y9 Q9 S F0 }% o3 B
It is a pity that you didn’t see such a good film.
' y2 d. J3 g" ]7 a 你没看这么好的电影,真可惜。
& u$ K$ n9 j. t: V+ \. G( T( y It is certain that we shall succeed. 我们一定会成功。
8 I+ Z( @8 q+ }7 v2 T$ B. a It is strange that nobody knows where he lives.
X' m8 V4 ~' U 真奇怪,谁也不知道他住在哪里。5 d. ~. t5 o; p8 \- S
(It is strange that…后面可用虚拟语气。" Z' U! w2 R5 i# V/ n- d) ?
如:It is strange that he should have made such a mistake.
9 x& R; N5 K1 k5 o 他居然犯了这样一个错误,真奇怪。
& j6 y* k9 U6 w# p0 B4 N. i4 w" \ It is strange that nobody should know where he lives.1 H" Z ^/ E6 H! n8 B
居然没有人知道他住在哪里,真奇怪。)4 }' y3 @/ B3 \* K+ v
It is said that the plane will take off at ten tomorrow morning.8 Q" X3 l7 |- C
据说飞机明天上午十点起飞。 |