5. Because I forgot to electricize my mobile telephone yesterday, when I woke up itclosed.
我昨天忘记给手机充电了，今早醒来发现手机关机了。
还能这样说：
My phone had run out of power for I forgot to charge up the battery.
My battery was dead when I roused up from sleep.
应用解析：
forget oneself in 沉浸于……
forget to 忘了要……
forget flagrantly 公然忽视;
forget wantonly 不负责任地忽略
6. His phone is powered off.
他的电话关机了。
还能这样说：
His phone turns off automatically.
His phone goes dead now.
应用解析：
be beyond one's powers 不能胜任，力所不及;
come to power 掌权，上台;
do all in one's power 尽力，竭尽全力
7. The subscriber I just dialed is power off.
我刚刚拨打的电话关机了。
还能这样说：
The phone I just dialed has logged off.
The phone I called a moment ago shuts down.
应用解析：
ten percent off 九折;
drink off 喝完;
leave off work 停止工作;
pay off 付清;
get off 脱衣，下马;
fall off 从……掉下来;
look off 掉转视线
8. Could I use your phone? Mine is power off.
我能用一下你的手机吗?我的没电了。
还能这样说：
Would you mind me using your cell phone?
Are you so kind to lend your phone to me?
谚语：
Use is a second nature.
习惯成自然。