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1、1“it”的常用句型的常用句型湖北省嘉鱼一中湖北省嘉鱼一中 黄继兰黄继兰 1. It is/was +被强调部被强调部分分 +that/who 强调句型极易与下列其他句型混淆,故高考也常考查这方面的内容。做题时首先判断该 题是否为强调句型。把“It be that”去掉，如果剩余部分句子结构仍然完整（被强调部分要 还原到原位置） ，那么这个句子就是强调句；如果句子不完整，则不是强调句。It is what you do rather than what you say that matters It was about 600 years ago that the first clock wi
2、th a face and an hour hand was made.2. It is/was not until +被强调部被强调部分分+that 该句型也是强调句型。主要用于强调时间状语，译成汉语为“直 到才” ， 可以说是 notuntil的强调形式。 It wasnt until nearly a month later that I received the mangers reply. It was not until she got home that Jennifer realized she had lost her keys. 3. It be+段时间段时间+ since
3、 . “自从自从以来以来” 该句型中的 be 动词通常为一般现在时态或现在完成时态,since 引导的从句通常是一般过 去时态。译为“自从以来已经有多长时间了”。 It has been three days since he was ill.他生病已经有三天了。(since 引导时间状 语从句，it 表示时间 ) 注意注意: 如果 since 从句中的谓语动词为延续性动词时, 应译为“自从不以来已经有多 长时间了”。如: It is / has been seven years since I taught in this school. 我离开 这所学校已经有七年了。 时态的把握:如果主句
4、运用的是一般现在时或现在完成时,那么 since 引导的从句用一般 过去时;如果主句运用的是一般过去时,那么 since 引导的从句常用过去完成时。 4. It be+点时间点时间+ when . ”当当的时候，是的时候，是” 该句型中的 when 引导的是一个时间状语从句。主句中的 it 指时间, 主句中的谓语动 词和从句中的谓语动词在时态上一般是一致的，主句是 will be，when 从句用一般现在时代 替将来时。表语由具体的时间充当点时间前不加介词。常译为“当的时候，是”。 Did Jack come back early last night? Yes. It was not yet
5、 eight oclock when he arrived home. It will be midnight when they get there 5. It be+段时间段时间+ before . “多久之后才多久之后才”、 “不久不久就就” 这个句型中的时间一般为表示一段时间的词语(如：long years , months , weeks , days ,hours , minutes ) ，主句中的谓语动词用肯定式，意为“过多长 时间才.”。主句的谓语动词是否定式时，意为“没过多长时间就.”。主句的 时态可用过去时 was 或将来时 will be；用 was 时，before 从
6、句的动词用一般过 去时；用 will be 时，before 从句常用一般现在时。 例如： It was long before the police arrived . It will be hours before he makes a decision 6. It is/ was that 结构的主语从句结构的主语从句, 这也是这也是 It 代替从句作形式主语的常见句型代替从句作形式主语的常见句型(1) It be +adj (clear, obvious, true, possible, certain .) that. 该句型中 it 是形式主语，真正的主语是 that 引导的主语从
7、句，常译为“清楚（显然，真的， 肯定） ”，是主语从句最常见的一种结构。 2It is very clear that hes round and tall like a tree.It is likely that they will beat us tonight .今晚很可能他们会赢我们。(2) It is important (necessary, right, strange, natural .) that . 该句型和上一个同属一个句型。由于主句中的形容词不同，that 后的从句中要用虚拟语气 （should + 动词原形，should 可以省去。）建议记住该句型中的形容词。 I
8、t is important that we (should) learn English well. It is necessary that he (should) remember these words. （3）it + be +过去分词过去分词 （said, reported, learned .) that 该句型中的 it 仍是形式主语，真正的主语是 that 引导的主语从句。该结构常译为“据说 （据报道，据悉） ”。 Its said that Tom has come back from abroad. It was reported that dozens of child
9、ren died in the accident. 可用于该句型的过去分词还有：known , thought , told , believed , hoped , announced ,expected ,等， 该句型常可以转换成含有宾语从句的复合如： Its said that Tom has come back from abroad . He is said to have come back from abroad . (4) It be +过去分词过去分词(suggested, ordered .) that. 该句型和上一个同属一个句型。主句中的过去分词是表示请求、建议、命令等
10、词时，that 后的从句要用虚拟语气（should + 动词原形，should 可以省。 ）常译为“据建议，有命 令”。 It is suggested that the meeting (should) be put off. It was ordered that we (should) arrive there in two hours. （5）It + be + 名词词组名词词组 + that 从句从句: Its a pity that he cant swim for his age . Its a wonder that you could finish such a hard t
11、ask in such a short time . The Foreign Minister said, “It is our hope that the two sides will work towards peace.” 可用于该句型的名词词组还有：an honor , a good thing , a fact , a surprise , good news 等。 (6) It + seem / appear / happen + that 从句从句: 该句型中 it 是形式主语，that 引导的是主语从句，主句中的 happen, seem 等词是不及物动 词。意思是“碰巧或看来
12、”等。 It seems that he enjoys pop songs very much .看来他非常喜欢流行歌曲。 It happened that I went out that day .碰巧我那天外出了。 7. 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： 常用过去时态表示虚拟。 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. 8. It /This/Tha
13、t is the first (second .) time that . 该句型要和上一个句型区别开来。该句型中的 that 从句不用虚拟语气，而用完成时态。 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； 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. 9. It takes sb. some time(money) . to d
14、o sth. 该句型中的不定式是真正的主语，it 是形式主语，句型中的直接宾语是时间。常译为3“做要花费某人”。 It took thousands of people many years to build the Great Wall 10. it 代替连接代词或连接副词引导的从句作形式主语。代替连接代词或连接副词引导的从句作形式主语。 1) It is known (not decided , not made clear , found out , discussed , being discus sed , being considered , a question , uncert
15、ain 等等) + 连接代词或连接副词引导的从句。连接代词或连接副词引导的从句。 It is still a question when we shall have our sports meet. 我们将什么时候举行运动 会还是一个问题。 It is uncertain whether he can attend this conference or not. 他能否来开会还不能确 定。2) It doesnt matter(doesnt matter too much , doesnt make too much difference 等等) + 连接代词或连接副词引导的从句。连接代词或连
16、接副词引导的从句。如： It doesnt matter whether we go together or separately. 我们一起去还是分开去都可以 。 It doesnt matter too much to me what you do or where you go. 你做什么或去什么 地方，对我都无关紧要11 It is no good (use) doing sth. 该句型中的真正主语是动名词短语，主句中的表语可以是 no good, not any good, no use, not any use。 It is no good learning English without speaking English.
