switch 既可以作名词,也可以作动词。作动词时,所对应的短语动词很少很少。其中比较常见的是 switch off.
一、常见的意思是“关掉”,通常是指关电灯、带有电源的机器或水龙头等,设备是主动被关掉的,例如:
Please switch the water off when you're done brushing your teeth.
你刷牙后请把水关掉。
I forgot to switch off my laptop, and now the battery is dead.
我忘了关笔记本电脑,现在电池没电了。
解析:forget to do sth 表示忘记要去做某事。
二、意为“停止工作,失去功能,自动切断电源”,设备是自己关掉或应该停止工作的,例如:
The computer switches off if has been inactive for more than an hour.
如果计算机处于非活动状态超过一小时,则关闭。
The lights should switch off once there's no longer any motion on the premises.
一旦房子里没有任何动静,灯就应该关掉。
三、意为“不再想着;不再注意;失去兴趣”,例如
The talk lasted for ages, and eventually I just switched off.
谈话持续了好长时间,最后我就失去兴趣了。
Many people in stressful jobs find it difficult to switch off when they come home.
许多工作压力大的人回家后很难不想工作的事。
解析:find + sb/sth + 宾补(形容词) 表示发现某人或某事怎么样,又如:
Some people find it difficult to discern blue from green.
有些人难以鉴别蓝绿两种颜色。
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