Chinese phrase
因为〜，我不能答应 yīn wèi 〜 wǒ bù néng dā yìng
Meaning
I can't say yes because ___
When to use it
Declines a request because of a stated reason. It gives a polite, direct way to say no while explaining why.
Example dialogue
你明天能来帮我搬家吗？ nǐ míng tiān néng lái bāng wǒ bān jiā ma
Can you come help me move tomorrow?
因为明天要出差，我不能答应。 yīn wèi míng tiān yào chū chāi wǒ bù néng dā yìng
I can't say yes because I'm going on a business trip tomorrow.