1、打开（水、电视、收音机、灯、煤气等）;
turn on the television（turn on the TV）打开电视
turn on the stereo打开立体声(音响)
turn on the light（turn the light on）开灯
Turn on the gas打开煤气
turn on the radio打开收音机
turn on the shower打开淋浴喷头。
turn on the water（ turn on the tap）打开水龙头
turn on the heating打开暖气
turn on the juice 接通电源
turn on the overhead light 打开吊灯
turn on your flashlight 打开手电筒
turn on the computer
turn on a switch打开电源
I wish I knew how to turn on the heating.
真希望我知道怎么开暖气。
Shall I turn on the TV?--Yes, please.
我打开电视机好吗？--好，请打开吧。
You'd turn on the water, and it would shoot straight up in the air.
你若打开水龙头，水会直往上喷。
She heard him turn on the shower.
她听见他打开了淋浴喷头。
She asked them why they hadn't turned the lights on.
她问他们为什么不开灯。
I want to turn on the television
我想开电视。
I didn't turn on the light, but groped my way across the room.
我没有开灯，而是一路摸黑走过房间。
There's no need to turn on the light.
不用开灯。
Just turn on the juice, and we'll see if it works.
接通电源，看它是否正常运转。
Please turn on the overhead light.
请打开吊灯。
When I turn on the computer and watch the film, I get the answer.
当我打开电脑，看电影，我得到的答案。
I turned on a switch but the light had burnt out.
我打开电源，但电灯已经烧坏了。
2.turn on the waterworks哇的一声哭起来（特指为了引人注意或得到想要的东西）
I'm amazed at how fast she can turn on the waterworks.
她装哭的速度之快让我吃惊。
You needn't turn on the Waterworks for me.
你不用为我掉眼泪。
3.turn on the charm施展魅力
If you want girls to like you, you'd better turn on the charm.
如果你想让女孩喜欢你，你就要施展你的魅力喽。
Even as a young boy he knew how to turn on the charm when he wanted something.
即使在小时候，他就知道在要什么东西时怎样施展魅力。
4.turns sb on 变得兴奋, 刺激, 激起, 使生快感,诱惑；激发…的性欲
The body that turns men on doesn't have to be perfect.
并不是非得完美无瑕的身体才能激发男人的性欲。
5. turn on sb 对…进行身体（或语言)攻击;斥责
The dog suddenly turned on the mailman.
那条狗突然对邮差狂叫起来。
Demonstrators turned on police, overturning vehicles and setting fire to them
示威者攻击警察，推翻车辆并将其纵火焚烧。
He turned on Pete and accused him of being mixed up in drugs.
他怒斥皮特，指责他沾染毒品。
They turn on their own kind and peck each other to death
它们开始攻击同类，拼命地互相啄着。
6. turn on duty接班
We'll take our turn on duty at 1 p.m.
我们下午一点接班。
知识拓展：
turn sb in 交出, 上缴, 把...向里折, 告发, 交给警方, 出卖, 作出
turn on sb 突然攻击, 反对, 对...发怒, 依靠, 依赖, 取决于
turn to sb 转向, 翻到(某页), 变成, 求教于, 讨教于, 致力于, 着手, 开始工作, 积极行动
turn sb against sb 使某人与...作对, 使转而反对, 使与...为敌
give sb a turn 使某人大吃一惊,把某人吓一跳
turn sb over the perch 灭某人的威风,打掉某人的锐气
serve sb's turn 适合需要,有用,顶用,管用
turn sb adrift 辞退某人
turn sb off 使失去兴趣,使厌烦, 使没有性欲；使失去性欲 ; 从大路转向某一条小路;拐入
turn...into... 把…变成…
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