quit

1.quit的过去式和过去分词在英国通常是quitted，在美国通常是quit。

2.quit在英国很少用，在美国很常用，下面各句都多少有些美国英语味：

• The doctor advises him to quit smoking.
• Arthur always quits work at five o'clock.
• He hopes to quit at sixty-five.
• She quit last year because of ill health.