1. 原味表述：have a crush on somebody

解析：To have a romantic infatuation with someone, especially unbeknownst to that person. （迷戀某人）

例句：I'm going to dinner with this girl I have a crush on.

我要和我迷戀的這個女孩吃晚餐。

Did she ever tell him she used to have a crush on his brother?

她告訴他以前曾迷戀于他的哥哥嗎?

2. 原味表述：fall for someone

解析：To become completely infatuated with someone; to fall in love with someone.（完全迷戀某人，愛上某人）

例句：The moment I met my wife, I fell for her completely.

我見到我妻子的那刻，我就完全被她迷住了。

It 'll do you no good to fall for Mary .

你為瑪麗而傾倒沒有好處。

3. 原味表述：have it bad for someone

解析：have意指有，it意指戀情，bad意指相戀程度深過了頭；to have it bad for someone系指對某人眷戀得不可收拾，喻指對某人情真意切而不能自拔。

例句：Jim confessed that he had it bad for Lucy, and, worst of all, he couldn't help thinking of her all day long.

Jim坦白他深深地愛戀著Lucy，而且最糟糕的是他禁不住終日思念著。

4. 原味表述：head over heels in love with someone

解析：To be in love with someone very much.（為某人神魂顛倒，沉溺于情海）

例句：——You look like a million dollars today. See the guy over there? He is totally checking you out! I think he is head over heels in love with you.

——你今天看起來美極了！看到那邊的那個男孩了嗎？他一直在打量你。我想他是深深地愛上你了。

——You don't say! Stop pulling my leg, okay? Anyway, he is not my cup of tea.

——不會吧！別取笑我了，好嗎？而且他也不是我的菜。