switch /swɪtʃ/ ► SEE ALLswitch off switch offswitch sth offswitch itself offswitch onswitch sth onswitch itself onswitch over (to sth)switch sth over (to sth)●ˌswitch ˈoff (informal) to stop giving your attention to sb or sth不再想着；不去考虑；失去兴趣；觉得乏味◆I just switch off when Jo starts talking. 我一听乔讲话就腻味。◆Do you find it hard to switch off (= stop thinking about work) when you get home? 你回到家后是不是觉得很难放下工作？SYNturn off[v + adv]●ˌswitch ˈoff🔑●ˌswitch sth ˈoff🔑●ˌswitch itself ˈoff🔑to stop an electrical device, a machine or an engine working by pressing a switch, a button, etc.关闭，断开（电器、机器或引擎）◆The heating switches off at 10.00 p.m. 晚上 10 点停止供暖。◆Shall I switch the lights off? 我要不要关了灯？◆The electricity has been switched off. 电源被切断了。◆Her smile switched off suddenly when she saw him come in. 一看见他进来，她的笑容马上消失了。◆Please switch off your mobile phones. 请关闭手机。SYNturn off, turn itself off, turn sth off OPPswitch on, switch sth on, switch itself on[v + adv][v + n/pron + adv][v + adv + n]●ˌswitch ˈon🔑●ˌswitch sth ˈon🔑●ˌswitch itself ˈon🔑to start an electrical device, a machine or an engine by pressing a switch, a button, etc.打开，接通（电器、机器或引擎）◆She walked in and switched on the light. 她走进来开了灯。◆The machine switches (itself) on automatically. 这台机器能自动启动。◆How do you switch this thing on? 怎么把这个东西打开？◆ (figurative) He can switch on the charm whenever he likes. 他随时都能施展魅力。SYNturn on, turn itself on, turn sth on OPPswitch off, switch sth off, switch itself off[v + adv]●ˌswitch ˈover (to sth)●ˌswitch sth ˈover (to sth)1. (BrE) to change from one television station to another换台；换频道◆I switched over to watch the news. 我换了个频道看新闻。SYNchange over(to sth), turn over(to sth), turn sth over(to sth)2. ( ˌswitch sb ˈover) to change from one position, situation, job, etc. to another（把某人）转换到另一位置（或局面、岗位等）◆We’ve finally switched over to a computerized system. 我们的系统最终转换成了计算机化系统。◆The country gradually switched over from imperial to metric. 该国逐渐从英制转用公制。◆35 000 customers have been switched over to the new system. 已经让 35 000 名客户转用新系统。SYNchange over(from sth)(to sth)[v + adv][v + n/pron + adv][v + adv + n]