It 用法面面观 |
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中学英语教学资源网 → 英语论文 → 教学论文 手机版 | ||||
作者:邢新 it用法有很多,一起来看一下。 一、可指代前文提到过的事物或事情。例如: My book is missing. I can't find it anywhere. 我的书不见了,我到处都找不到它。 You have saved my life. I will never forget it. 你救了我的命,我永远不会忘记这件事。 Her mother just died. It's a terrible shock to her. 她的母亲刚去世,这对她是个极大的打击。 Jack is ill. Have you heard about it? 杰克生病了。你听说了吗? 二、用以代替指示代词this, that。例如: -Who is that? 那是谁? -It's my friend. 是我的朋友。 -What is this? 这是什么? -It's a frog. 是只青蛙。 三、用于表示天气、时间、距离等。例如: It's cloudy / very cold today. 今天多云 / 很冷。 It's half past nine now. 现在是九点半。 It's a long way to the post office. 这儿离邮局很远。 四、在附加疑问句中,可以用来代替all, everything等不定代词。例如: All is going well, isn't it? 一切顺利,不是吗? Nothing could make her change her views, could it? 没什么能使她改变观点,是吗? Everything is prepared well, isn't it? 一切都准备好了,不是吗? 五、可以在句中作形式主语或形式宾语,代替由不定式、动名词或从句表示的真正的主语或宾语。例如: It is very difficult to finish the task in such a short time. 在如此短的时间内完成任务很困难。 I found it impossible to get there on time. 我发现按时到那儿是不可能的。 It is said that he refuses to come. 据说他拒绝来。 It is no use learning these figures by heart. 记住这些数字没有用。 六、可用于含有before或since的特定句型中。例如: It was not long before the war broke out. 不久战争就爆发了。 It is five months since I smoked. 我已有5个月不吸烟了。 七、 可用在强调结构中,用来强调句子的某一成分(通常是主语、宾语或状语)。在这种结构中,it 不可用this或that替代。例如: It was last summer that I graduated from the university. 我是去年夏天从那所大学毕业的。 It was at an evening party that I first saw her. 我第一次见到她是在一次晚会上。 It is Professor Wu that / who sent me the letter. 给我寄信的是吴教授。 It is this novel that they talked about last week. 他们上周讨论的就是这部小说。 |
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