我完全同意。
I couldn't agree more.(虛擬語氣)
我完全同意你。
I agree with you completely.
他完全同意我的意見。
He goes all the way with me.
He goes along with me all the way.
注:go all the way with完全一致,完全同意
我對你的提議不能完全同意。
I cannot go all the way with your proposal.
我們都向經理訴了苦,他也完全同意我們的意見。
We all had a moan to the manager about it, and he was in full agreement.
注: have a moan發牢騷, 訴苦;moan(名)呻吟,哀悼,抱怨
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