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(1) 1)偶然發(fā)生((of an event，accident，etc)take place，occur often by chance)[I]：What～ed?發(fā)生了什么事?What time/How/When did the accident～?事故是什么時(shí)間/怎樣/何時(shí)發(fā)生的?〖同〗occur; 2)經(jīng)歷，降臨到……頭上(the result of an event or course of action)[I+prep (to)]：If anything/nothing～s to sb... 如果某人出了什么事/沒出意外……;A strange thing/bad accident～ed to him.他發(fā)生了一件奇怪的事/嚴(yán)重的事故。What～ed to my car/salary?我的車子/工資怎么啦?

(2)碰巧，偶然 (have the fortune or lot (to do or be as specified))[I+to-inf]：I～ed to know about him.我恰好知道他。 It～ed that the weather was bad/he had no money with him.碰巧天氣不好/他身上沒帶錢。

(3)巧遇，偶然發(fā)現(xiàn)(找到)(find sth/sb by chance)[I+prep (on/upon)](fml)：He～ed on/upon the answer/perfect solution to the main problem/a clue to the mystery.他偶然找到了答案/那個(gè)主要問題完美的解決辦法/解這個(gè)謎的線索?！玱n sb in India/a band of gipsies 在印度巧遇某人/偶遇一群吉普賽人;

as it happens/happened 碰巧，偶然：As it～s，I had my cheque book stolen that day. 那天我的支票簿正好被盜。

→′happening n(常pl)發(fā)生的事，事件;引人注目的事件;即興表演;

【辨異】happen與chance、occur和take place 的區(qū)別見CHANCE。