Meaning of dā:
答
bound form having the same meaning as the free word 答[da2], used in 答應|答应[da1 ying5], 答理[da1 li5] etc; to answer; to reply; to respond
Tā zǒng shì hěn kuài de dā yìng wèntí.
他总是很快地答应问题。
He always answers questions quickly.
Tā zhōngyú gěichūle zhèngquè de dá'àn.
他终于给出了正确的答案。
He finally gave the correct answer.
Tā mǎshàng gěi wǒmen fā le yīgè dáfù.
他马上给我们发了一个答复。
He immediately sent us a reply.
Tā mǎshàng jiù gěi wǒ yī ge dá'àn.
他马上就给我一个答案。
He immediately gave me an answer.