范文：
标题：Agree的过去式
在英语中，动词“agree”的过去式是“agreed”。这个动词通常用来表示同意或达成一致。以下是一个使用“agreed”的例句：
Last week, we had a meeting where we all agreed on the new project timeline.
上周，我们开了一个会，我们所有人都同意了新的项目时间表。
常见问答知识清单：
1. What is the past tense of "agree"?
2. How do you use "agreed" in a sentence?
3. Can "agreed" be used in both formal and informal writing?
4. What is the past participle of "agree"?
5. How is "agreed" pronounced?
6. Can "agreed" be used in past perfect tense?
7. What is the difference between "agree" and "agreed"?
8. Can "agreed" be followed by a clause?
9. Is "agreed" an irregular verb?
10. How do you form the past perfect tense with "agree"?
详细解答：
1. What is the past tense of "agree"?
The past tense of "agree" is "agreed."
2. How do you use "agreed" in a sentence?
You can use "agreed" in a sentence like this: "We agreed on the terms of the contract."
3. Can "agreed" be used in both formal and informal writing?
Yes, "agreed" can be used in both formal and informal writing.
4. What is the past participle of "agree"?
The past participle of "agree" is also "agreed."
5. How is "agreed" pronounced?
"Agreed" is pronounced as /əˈɡriːd/.
6. Can "agreed" be used in past perfect tense?
Yes, "agreed" can be used in the past perfect tense, such as "We had agreed on the details before the meeting."
7. What is the difference between "agree" and "agreed"?
"Agree" is the base form of the verb, and "agreed" is the past tense and past participle form.
8. Can "agreed" be followed by a clause?
Yes, "agreed" can be followed by a clause that uses "that" as a subordinating conjunction, like this: "We all agreed that the plan was feasible."
9. Is "agreed" an irregular verb?
No, "agree" is an irregular verb, but "agreed" is regular in terms of its past tense and past participle forms.
10. How do you form the past perfect tense with "agree"?
To form the past perfect tense with "agree," you use "had agreed." For example: "Before the meeting, we had agreed on the key points of the discussion."
