最好不要。

　　I'd rather you didn't. *I'd rather...not表示“如果可以的话，我不想……”、“如果可以的话我想拒绝……”、“如果允许的话我想推辞……”。I'd rather是I would rather的缩写形式，用于婉转地拒绝对方的建议时。

　　May I smoke? (我可以吸烟吗?)

　　I'd rather you didn't. (最好不吸。)

　　Would you mind if I went with you? (我也可以和你一起去吗?)

　　I'd rather you didn't. (希望你最好别来。)

　　I'd prefer it if you didn't.

　　I'd prefer you not to.

　　I'd rather that you not.

　　不行!

　　Not on your life! *表示强烈的拒绝。

　　Would you lie for me? (你能帮我撒个谎吗?)

　　Not on your life! (不行!)

　　Certainly not.

　　Not for any reason!

　　No way!

　　Not a chance!

　　Fat chance!

　　Not a chance in the world! *表示更为强烈的拒绝。

　　绝不允许!

　　Over my dead body! *表示“只要我还未闭眼，绝不让……”、“完全不可能”。

　　Would you loan me ￥100,000? (你能借给我10万日元吗?)