| 词组 | switch |
| 释义 | switch [switched, switched, switching] switch around switch sb/sth around/round to move two or more things or people so that each one is in the place that the other was in before, or is doing the job or activity that the other was doing before: ▪ Claudia dropped the sleeping pills into her own mug, stirred swiftly and then rapidly switched the mugs round. ▪ Absences could easily be covered because most of the staff knew each others' and could easily be switched around. ■ SIMILAR TO: ↑swap over/around switch off 1. switch off sth • switch sth off • switch off to make something stop working by using a switch - use this about things that use electricity, for example lights, televisions, or computers: ▪ Sylvie switched the lights off and went to bed. ▪ "What are you watching that rubbish for?" he said, and switched off the television. ■ SIMILAR TO: ↑turn off ■ OPPOSITE: switch on 2. switch off especially BrE to stop listening or paying attention to what someone is saying, because it is not interesting: ▪ When my wife's colleagues all start talking about their work, I just switch off. ▪ You shouldn't make your speech too long, or people will switch off. ■ SIMILAR TO: ↑tune out AmE informal 3. switch off to stop thinking about your work or problems, and relax: ▪ I play squash after work to help me switch off. ▪ Sometimes she can't get to sleep, because she just can't switch off. switch on 1. switch on sth • switch sth on • switch on to make something start working by using a switch - use this about things that use electricity, for example lights, televisions, or computers: ▪ Can you switch the light on? ▪ My sister switched on the radio, and began to dance around the kitchen. ▪ You can't put the disk in until I've switched on. ■ SIMILAR TO: ↑turn on ■ OPPOSITE: switch off 2. switch on a smile BrE to smile at someone when this is not sincere: ▪ Switching on her brightest, falsest smile, she turned to him: "It's been very nice to meet you, Mr Burns". 3. be switched on BrE spoken to be intelligent, and quick to notice and understand things that are happening around you: ▪ This new headteacher, Mr Collins - he's meant to be pretty switched on. ▪ The ones who were going to succeed were those who acted more efficiently and were more switched on. ■ SIMILAR TO: be on the ball informal switch over 1. switch over to change from one method, system, product etc to a different one +to ▪ I've switched over to telephone banking because it's more convenient. ▪ The power failure created chaos throughout the city and forced three hospitals to switch over to their emergency generators. + from ▪ A new high-speed rail service would encourage millions of passengers to switch over from air travel. ■ SIMILAR TO: ↑switch over, ↑change over switchover n the change from one system, method etc to a different one: ▪ The switchover to less labor-intensive technologies has caused a serious unemployment problem. 2. switch over BrE to change from one television or radio station to another: ▪ There's a film on the other channel - does anyone mind if I switch over? ■ SIMILAR TO: ↑turn over 3. switch over if two people switch over, they each start doing the job or activity that the other one was doing before: ▪ If you get tired of driving we can always switch over. ■ SIMILAR TO: ↑change over, ↑swap over switch round BrE ► see ↑switch around |
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