Happen 用法小结
 生活中什么事都可能会“发生(happen)”。那么,你知道怎样使用happen这个词吗?下面我们就对happen的用法作一小结。
  happen是不及物动词,它的用法常见的有如下几种情况:
  1. 表示“某地(某时)发生了什么事”,常用“sth.+ happen+地点/时间”这一结构来表达,此时主语应是事情。例如:
  The story happened in 2003. 这个故事发生在2003年。
  An accident happened in that street. 那条街上发生了一起事故。
  2. 表示“某人出了某事(常指不好的事)”,要用“sth.+ happen+to sb.”这一结构来表达。例如:
  A car accident happened to her this morning. 今天上午她发生了交通事故。
  What happened to you? 你怎么啦?
  3. 表示“某人碰巧做某事”,要用“sb.+ happen+ to do sth.”这一结构来表达。例如:
  I happened to meet a friend of mine in the street yesterday.昨天我碰巧在街上遇到了我的一个朋友。
  4. happen表示“碰巧或恰巧发生某事”时,还可用“It happens / happenedthat...”这一结构来表达。例如:
  It happened that Brian and Peter were at home that day.碰巧那天布莱恩和彼得在家了。
  It happened that he had to take part in a meeting that afternoon.碰巧那天下午他不得不参加一个会议。
  注:that从句中的主语是人时,此种结构可以与“sb.+ h appen + to do sth.”结构互换。例如:
  It happened that Brian and Peter were at home that day. = Brianand Peter happened to be at home that day.
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