【turn的各种形式】在英语中，“turn”是一个非常常见的动词，根据不同的语境和用法，可以有多种变形和含义。了解“turn”的各种形式不仅有助于提高语言表达能力，还能帮助更准确地理解句子的含义。以下是对“turn”各种形式的总结。
一、基本形式与词性
“turn”作为动词时，主要表示“转动、转变、轮流”等意思；作为名词时，常指“转弯、轮次、翻转”等。下面是“turn”的基本形式及其词性：
| 词形 | 词性 | 中文含义 | 示例句子 |
| turn | 动词 | 转动、转变 | He turned the page of the book. |
| turn | 名词 | 转弯、轮次 | The car made a sharp turn at the corner. |
二、动词的不同时态和语态
“turn”是规则动词，其不同时态的变化如下：
| 时态 | 形式 | 例句 |
| 一般现在时 | turn | She turns the light on every night. |
| 一般过去时 | turned | They turned off the TV before going to bed. |
| 一般将来时 | will turn | The sun will turn in the east tomorrow. |
| 现在进行时 | is/are turning | He is turning the key in the lock. |
| 过去进行时 | was/were turning | We were turning the car around when it rained. |
| 现在完成时 | have/has turned | I have turned the phone on already. |
| 过去完成时 | had turned | By the time we arrived, he had turned off the lights. |
三、被动语态形式
“turn”也可以用于被动语态，常见于描述状态或结果的变化：
| 语态 | 形式 | 例句 |
| 一般现在时被动 | is/are turned | The door is turned slowly. |
| 一般过去时被动 | was/were turned | The page was turned by the wind. |
| 现在完成时被动 | has/have been turned | The plan has been turned down by the committee. |
四、其他常见搭配与短语
除了基本形式外，“turn”还常与其他词搭配使用，形成固定短语或习惯用法：
| 短语 | 含义 | 例句 |
| turn on | 打开（电器、灯光等） | Please turn on the heater. |
| turn off | 关闭（电器、灯光等） | Don’t forget to turn off the computer. |
| turn up | 出现、调高（音量等） | He turned up late for the meeting. |
| turn down | 拒绝、调低（音量等） | She turned down the job offer. |
| turn out | 结果、生产、出现 | The experiment turned out well. |
| turn around | 转身、改变方向 | He turned around and saw his friend. |
| turn over | 翻身、移交（工作） | The company will turn over its assets. |
五、名词形式的常见用法
作为名词时，“turn”常用于描述动作的次数或过程：
| 用法 | 例句 |
| 一次转动 | He gave the wheel a full turn. |
| 一轮比赛 | The game went through several turns. |
| 一个轮次 | Each player gets a turn to speak. |
总结
“turn”是一个多功能的词，既可以作动词，也可以作名词，且在不同语境中有丰富的含义和用法。掌握它的各种形式和搭配，不仅能提升语言表达的准确性，还能让写作和口语更加自然流畅。通过表格的形式，我们可以清晰地看到“turn”的不同形态及其对应的含义和用法，便于记忆和应用。