视而不见

例句：

1. 1.She forgot her keys on the bus.
   她在公交车上忘记了她的钥匙。
2. 2. He forgot to turn off the lights before leaving.
   他离开前忘了关灯。
3. 3. I forgot all about him when I got back from vacation.
   我度假回来后完全忘了他。