turn的用法归纳如下

turn的用法归纳如下:
I. turn (n.) 顺序, 轮流
1. It's one's turn to do sth. 轮到某人做某事
It's your turn to make a decision.
2. take one's turn to do sth. = do sth. in turn =do sth. by turns轮流做某事
The nurses attended the patient in turn / by turns. =The nurses took turns to attend the patient.
turn (vi.) 转动,转向,翻转
turn right / left = turn to the right / left
turn to sth. / sb. (for help)
turn to page 84
turn (link-v.) 变得……
turn green / yellow 变绿/黄了
Ten years later，he turned
teacher.
A. /
B. a
C. an
D. the
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.
固定词组:
1. turn against 背叛
Nobody will turn against his country.
2. turn down 关小/ 拒绝
He turned down my suggestion without hesitation.
Please turn down the gas.
3. 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.
4. turn in 上交
The child picked up a purse on the way and turned it in to the policeman.
5. turn ... into ... (使……)成为……
The farmers are turning waste land into rice fields.
6. turn off 关(水源、煤气、电灯等) / 避开(问题等)
Turn off the light when you leave the room.
7. turn on 打开(水、煤气、电灯、无线电等) / 对……发怒
turn on the radio
turn the gun on sb.
8. turn out 结果是/ 证明是/ 生产出
The weather yesterday turned out (to be) fine.
The factory turned out more products than they had expected.
9. 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.
10. turn up 开大/ 出现/ 找到/ 证明是(= turn out to be)
The meeting is beginning，but he has not turned up. He might have been lost.
turn用作名词时可以和不少介词构成介词短语，使用时须注意各短语意义上的细微差别。

l. at every turn每次，总是，到处，主要表示事情发生的频率。

例如：
①Because of his drinking，the man was refused a job at every torn．
由于酗酒，那个人每次找工作都遭到拒绝。

②Life holds new adventures al every torn．
生活中处处有新的风险。

2．by turn交替地，轮流地，一会儿……一会儿，其含义为：有规律地轮换，根据一个重复性的计划而一个接一个或一个替换另一个。

通常位于句末．turn为复数。

例如：
①His condition is critical；we have to look after him by toms．
他的病情极为严重，我们得轮流看护他。

②When John had a fever，he felt cold and hot by turns．
约翰发烧时，他一会儿发冷，一会儿发热。

3．in one's turn轮到某人(做事)。

例如：
They，in their torn，rejected that．
轮到他们时，他们也拒绝了。

4．in turn依次地，一次一个地，轮流地，其含义为：按照一个固定的顺序依次进行。

in turn 在句中位置较灵活，只有在表示“轮流”时才可和by turns换用，但它表示的时间范围要大些。

in turn还可表示“回报”。

例如：
①They rowed in turn／by toms．
他们轮流划船。

②The children went on the bus in torn．
孩子们依次上了公共汽车。

③Life becomes possible only when food is converted into energy，which in turn is used to seek more food to grow，to reproduce and to survive．
只有当食物转变为能量，能量再用来寻更多的食物，从而保证生命的
生长、繁殖和生存，生命才成为可能。

④I took Sally out to lunch，and she took me out in turn．
我请了萨莉出去吃午餐，作为回报，她也请了我一次。

5．on the turn 正在转变中，(牛奶)在变酸。

例如：
①At last the condition of the patient seems to be on the turn．
病人的情况看来终于有了转机。

②This cream is on the turn．
这些奶油变酸了。

6．out of turn不按顺序，加塞儿，此义为in turn(依次地)的反义语。

Out of turn 还可表示“不合时宜”。

例如：
①Bill tried to register out of turn and was sent away．
比尔注册时想加塞儿，结果被赶了出来。

②I hope I haven't spoken out of turn．I didn't know it was supposed to be secret．
希望我没有说不该说的话，我不知道这是要保密的。

7．to a turn煮(烧等)得恰到好处，完美的。

turn可改为T。

例如：
①This fowl is done to a turn．
这只鸡炖得恰到好处。

②His nickname，Tiny，suited to a T．
他的绰号“小不点”与他的身材正好相符。