小议It is + time + clause
It is + time + clause是英语中一个常用句型,也是高考必须把握的热点和难点,现归纳如下:
一、用在when引导的定语从句中, 其功能相当于一个由并列连词连接的分句
例 It was October the thirty-first when we went to Beijing. =It was October the thirty-first and on that day we went to Beijing.我们是12月31号去的北京。
二、 用在that引导的强调句中。注意时间前介词的应用
例 It was on October the thirty-first that we went to Beijing.就是在12月31号我们去的北京。
It is on Saturday when the meeting will be held. 就是在星期六开会。
三、用在since引导的状语从句中
例 It is two years since he left his hometown. 他离开家已两年了。
注:如果是延续动词则表示从这个动作结束。
例 It is five years since he worked here. 他不在这儿工作已5年了。
四、 用在before引导的状语从句中。这是一个常用句式,常译成以后
例 It will be five years before we meet again. 五年后我们再见面。
It will be at least three years before he forget about it. 至少3年后他才会忘记这件事。
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