About pronunciation of 大家 Can 大家 be pronounced like dà a ? I heard lots of Chinese'd pronounced just like that. Who can help me with this?
This phenomenon is called 懒音. And it can be very common in casual spoken language and it's really a personal habit varies for different people. In the case of 大家, the consonant of 家 is omitted for an easier pronunciation, since the vowel of 大 and 家 are both open vowel /a/, and /ʨ/ in the center is somewhat hard to articulate. Therefore, it becomes something like /ta a/.