have one's eyes on 想要

【讲解】

have one’s eye on本义是“把目光放在……逐渐转喻为“注视，想要”。

【对话】

A:Paul, I'm going to work.

A:保罗，爸爸要上班了。

B:Dad, don't forget to buy me the toy gun.

B:爸爸。别忘了给我买那支玩具枪。

A:No, I won't. I know you've been having your eyes on it for long.

A:好的，我知道你想要这支玩具枪已经很久了。

B: Thank you, Daddy.

B：谢谢你，爸爸。