vi.
1. (對提議、計劃、條件等)表示同意，贊成(to)； (對意見等)表示贊同(with):
I cannot agree with your opinions.
我不能同意妳的觀點。
Do you agree to the conditions?
妳同意這些條件嗎?
2. (意見)相同，(與某人)持相同意見，持壹致看法(with):
I agree with him.
我的意見和他的相同。
I don't agree with you.
我不同意妳的意見。
3. (就價錢、條件等)達成協議，商定 (about， on， upon):
They have agreed on the terms of surrender.
他們就投降條件達成了協議。
The two groups agreed on a cease-fire.
兩派達成了停火協議。
4. 表示願意，應允，答應：
I agree to leave at once.
我答應即刻離開。
5. (性情等)投合；相符，相同，壹致(with):
This story agrees with his.
這個敘述與他的敘述壹致。
The play does not agree with the book.
這個劇本與原著不相符。
6. 和睦相處：
They can't agree well.
他們無法和睦相處。
7. (食物、氣候等)相宜，適宜，適合(with):
The food did not agree with her.
這種食物不合她的胃口。
The climate agrees with me fairly well.
這氣候對我非常適宜。
8. 語法學(在性、數、人稱或格方面)壹致，響應(with):
In “The boy runs”, boy is a singular noun and runs agree with it in number.
在 “The boy runs” 此句中，boy 是單數名詞， runs 在數方面與它呼應。
An adjective must agree with its noun in mumber and case.
形容詞在數和格方面必須符合其所修飾的名詞。
vt.
1. 造成，同意；承認[後接名詞從句]：
I agree that she is the ablest of us.
我承認她是我們之中最能幹的壹個。
The boy agrees that his elder sister is much clever than him.
這個男孩承認他姐姐比他聰明得多。
2. [主英國英語]對…達成協議，就…取得壹致意見；對(提議、計劃、條件等)表示同意；對(意見等)表示贊同：
I must agree your plans.
我應該贊成妳的計劃。
We agree the stipulations.
我們就協定取得壹致意見。
3. 認定(賬目、數字等)正確無誤；使和諧壹致：
to agree the balance sheet with the record
弄平資產負債表和流水賬
至於agree in ,好像沒有這樣的用法，如果妳有電腦建議下載有道詞典