Pronunciation and the usage of 啊 So what does the word 啊 actually use for? I have seen it being use for some sentence but don’t really know when to use it

Also my teacher said to me that depending on the word 啊 goes with it will have different pronunciation. For example if it goes with 来 or 走 she told me 啊 kinda read out like “yà” while with看 or 想 the 啊 like become part of the pronunciation so ”看啊” is spoken like “kàn’à”
I am not sure about your teacher's opinion, it seems like she would want to use 呀 for the desired pronunciation yà.

Though, 啊 does have many tones, it can express feeling of surprise in first and third tone, it can express the meaning of asking in second tone, it can express meaning of adorable, getting it or surprise in fourth tone.

It can also mean a lot in its light tone.

You would be able to find all those in a dictionary, but keep in mind, it is not that strict, so use your intuition.