happen

过去式：happened

过去分词：happened

现在进行时：happening

词形变化：

动词过去式: happened | 动词过去分词: happened | 动词现在分词: happening | 动词第三人称单数: happens |

词义辨析：

同义:

vi.发生; 出现

occur

pass

take place

come off

vi.碰巧; 出现

chance

turn up

同义参见:

come

be

overtake

become