时钟敲响十二点时, 我关了电视上床睡觉。
Make sure the current is switched off before you leave on holiday.
你出去度假前一定要把电源关上。
for good永远
例句:The theater closed down for good.
这家剧院永久关闭了。
4.In a statement issued after a meeting in Gaza City, Hamas said its ceasefire was conditional on Israel stopping its attacks on the strip.
be conditional on在…条件下,取决于
5.In the past, Hamas has not been able to rein in all militant groups here and its authority will be tested by this move.
rein in放慢,止住,控制
例句:You must rein in your temper.
你一定要捺住火气。