【agree过去完成时】在英语语法中，"agree" 是一个常见的动词，表示“同意”或“达成一致”。虽然 "agree" 本身是一个不及物动词，通常不直接接宾语，但在某些情况下，它可以通过介词结构来表达“与某人意见一致”的意思。当我们在句子中使用 "agree" 的过去完成时态时，通常是用来描述在过去某一时间点之前已经发生的动作或状态。
一、总结
过去完成时（Past Perfect Tense）用于表示在过去某个时间点之前已经发生的事情。其结构为：had + 过去分词。对于 "agree" 来说，由于它是不及物动词，不能直接接宾语，因此它的过去完成时形式是 had agreed，常用于表达“在过去的某个时间点之前已经达成一致”。
例如：
- I had agreed with him before the meeting started.
- They had already agreed on the plan by the time we arrived.
二、表格展示
| 用法 | 结构 | 例句 | 说明 |
| 一般过去完成时 | had + agreed | She had agreed to the proposal. | 表示在过去某个时间点之前已经达成一致 |
| 过去完成时的否定 | had not + agreed | He had not agreed to the terms. | 表示在过去某个时间点之前没有达成一致 |
| 过去完成时的疑问句 | Had + 主语 + agreed? | Had they agreed with the decision? | 询问过去某个时间点之前是否达成一致 |
| 过去完成时的被动语态 | had been agreed | The agreement had been agreed by both parties. | 表示“协议已经被双方同意” |
三、注意事项
1. "Agree" 不可直接接宾语，如不能说 "I agreed the plan"，而应说 "I agreed to the plan" 或 "I agreed with the plan"。
2. "Agree" 常与介词搭配，如 agree with, agree to, agree on 等，这些结构在使用过去完成时的时候要保持完整。
3. 过去完成时强调动作的先后顺序，通常需要另一个过去的时间点作为参照。
四、常见错误对比
| 正确 | 错误 | 原因 |
| We had agreed on the date before she left. | We had agreed the date before she left. | "Agree" 不可直接接宾语，需加介词 |
| Had you agreed with the proposal? | Did you agree with the proposal? | 过去完成时用于强调动作的先后关系 |
| The deal had been agreed by both sides. | The deal had agreed by both sides. | "Agree" 不能用于被动语态，除非是 "be agreed" 的结构 |
通过以上内容可以看出，"agree" 在过去完成时中的使用需要注意动词的搭配和语态的变化。正确理解并运用这一时态，有助于更准确地表达过去事件之间的逻辑关系。