turn on, turn off, turn up, turn down讲解、练习及答案
★turn on表示“打开”，常指开灯或打开家用电器。
★turn off表示“关掉”，常指关掉自来水、电灯以及家用电器等。
★turn up表示“开大，调高”，常指调高（电器等）音量。
★turn down表示“关小，调低”，常指调低（电器等）音量。
turn的用法
一、 turn 用作名词时,意为“轮流”“依次轮流的顺序”。例如:
Now it’s your turn to read the text. 现在轮到你读课文了。
二、 turn 用作系动词时,意为“变得”。例如:
In spring the trees turn green and the flowers start to come out. 春天,树变绿了,花儿开了?
三 turn 用作不及物动词时,意为“转向”“翻转”.
turn right / left = turn to the right / left
四、转动,旋转
The wheel turns when its axis moves. 轮轴动时,轮子也跟着转动。
五、使倒置,使颠倒;倾倒[O]
He turned the glass upside down. 他将玻璃杯子倒置。
六、turn 可以和介词或副词一起构成短语动词,表达不同的意思?常见的这些短语动词有:
1. turn over 意为“翻过来”例如:
Tom turned over the note and read, “Come and look for me in the study.” 汤姆把便条翻过
来读道,“到书房来我.”
2. turn on 意为“打开(灯?收音机?电视机等)”?例如:
Please turn on the blender. 请打开果汁机?
3. turn off 意为“关上(灯?收音机?电视机等)”例如:
Please turn off the TV set. 请把电视机关掉?
4. turn down/up 意为“调低/高(音量)”?例如:
Could you turn your radio down, please? 你能把收音机的音量调低一点儿吗?
5. turn into变成
Water has turned into ice. 水已经结成了冰。
turn ... into ... (使……)成为……
The farmers are turning waste land into rice fields.
6. turn over (使)打翻 / 翻身 / 翻动 / 翻耕(土地) / 转危为安
The man turned over and went to sleep again when the telephone rang.
7. turn in 上交
The child picked up a purse on the way and turned it in to the policeman.
8. turn out 结果是 / 证明是 / 生产出
The weather yesterday turned out (to be) fine.
9. turn from side to side 把身体转来转去
The naughty boy turned from side to side while answering questions in class.
10. turn up 开大 / 出现 / 到 / 证明是 (= turn out to be)
The meeting is beginning， but he has not turned up. He might have been lost.
11．turn against 背叛
He turned against his former friends. 他转而与以前的朋友作对。
[练习] 从ABCD中选择最佳答案.
( )1. —Do you mind if I ________ the TV a bit?
—Yes, I do, because I'm busy with my homework now.
A. turn on | B. turn up | C. turn down | D. turn off |
( )2. The lights must be________ before you leave the classroom.
A. turned on | B. turned up | C. turned down | D. turned off |
( )3. Don't________ the radio. The baby is sleeping.
A. turn off | B. turn on | C. turn over | D. turn down |
( )4. How magnificent the Bund looks at night when all the lights are________ !
A. turned over | B. turned off | C. turned down | D. turned on |
( )5. —Her radio is too loud, isn't it?
—Yes. Let me tell her to________ .
A. turn it up | B. turn up it | C. turn it down | D. turn down it |
( )6. —The radio is too noisy and there is nothing interesting on it. Why don't you________ ?
—All right. I'll do that.
A. turn it on | B. turn it off | C. turn it back | D. turn it up |
( )7. The boy is sleeping. Please ________ the radio.(2017湖南益阳)
A. turn up | B. turn down | C. turn on | D. turn up |
( )8. It's getting dark. Please ________ the light. (2017江苏淮安)
A. turn on | B. turn off | C. turn down | D. turn around |
( )9. Please ________ the water when you brush your teeth.(2017河北)
A. take down | B. turn up | C. take away | D. turn off |
( )10. — Would you mind ________ the music a little? Don't you think it's too loud?
— Sorry! I'll do it in a minute.(2017浙江台州)
A. turning on | B. turning off | C. turning up | D. turning down |
( )11. I love this song by Lady Gaga. Would you ________ the TV a bit, please? I can't hear it clearly. (2016广东)
A. turn on | B. turn off | C. turn up | D. turn down |
( )12. Ten years later, he turned ________ teacher. （易错题）
A. / | B. a | C. an | D. the |
Key: 1.B 2.D 3.B 4.D5. C6. B7.B 8.A 9.D 10.D 11.C 12.A
12题注:此题考查turn 作连系动词的特殊用法,即 turn 作连系动词时后接表语名词，省略冠词.所以此题的答案为A. 如果turn 后加into 则须在名词前加冠词a.
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