2009年高三英语精编复习资料第二部分：语法专题（it 句型）

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2009年高三英语精编复习资料第二部分：语法专题（It 句型）
1.It is ＋adj.（＋for sb.／sth.） ＋ to do sth.
用于此句型高考资源网的形容词有：easy, hard, difficult, possible, important, impossible, necessary, good, bad, exciting, interesting, surprising等。如：
It is necessary to change your job.
It was very hard for them to walk such a long way in the snow. 21世纪教育网
2.It is ＋n.（＋for sb.／sth.） ＋ to do sth.
用于此句型的名词有： pity, shame, pleasure, one’s duty, one’s job, fun, joy, good manners, bad manners等。如： It is a pity for you to have missed such a wonderful play.
It is bad manners for the young to take up the seats for the old.
3.It is ＋adj.＋of sb.＋to do sth.
此句型中的adj.主要描述某人的品德、特征。能用于该句型的形容词有： kind, nice, wise,
silly, polite, impolite, friendly, foolish, clever等。
如： How silly it was of you to give up such a good chance！
It is friendly of the family to try to make me feel at home in their house.
4.It is ＋adj.（＋n.）＋doing sth. 21世纪教育网
此句型中的形容词和名词常见的有：no／little use, no／much good,useless等。如：
It’s no use crying over spilt milk.
5.It takes sb.＋一段时间＋to do sth. 表示“做某事花费某人多长时间”。如：
It took us half an hour to ride to the town by the sea.
6.It is ＋及物动词的过去分词＋that从句
此句型中常见的及物动词的过去分词有：said, told, known, reported,recorded, thought, believed, considered等。
如：It is reported that the Russian President will visit China next week.
7.It ＋不及物动词＋that从句
此句型中不及物动词常见的有：seem, happen, appear, matter等。如：
It seems that there will be a heavy snow tomorrow.
It happened that I met my good friends in the museum yesterday.
8.强调句型：It is＋被强调部分＋that／who从句
在使用强调句型时要注意, 指人时可以用who或that, 其它情况一律用that。如：
It was under the bed that my brother hid the ball this morning.
It is Mr Bell who／that often comes and looks after the old man.
9.It is／has been＋一段时间＋since从句。21世纪教育网
如： It is ／has been three years since we saw each other last.
10.It is （high） time that sb. did sth.
该句型表示“某人现在该做某事了”, 从句常用过去时（虚拟语气）说明现在应该做的事情。如： It’s six o’clock.It is high time that we went home now
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