Formal:
* நீங்க என்ன சொல்றீங்க? (Neenga enna solringa?) - This literally means "What are you saying?", but it's often used as a polite way to ask for someone's opinion or thoughts.
* உங்க கருத்து என்ன? (Ungga karuththu enna?) - This means "What is your opinion?".
Informal:
* நீ என்ன நினைக்கிற? (Nee enna ninaikkira?) - This means "What do you think?".
* நீ என்ன சொல்ற? (Nee enna solra?) - This is a more casual way to ask "What do you say?".
* நீங்க என்ன சொல்லுறீங்க? (Neenga enna solluringa?) - This is a more casual version of "What are you saying?"
In response to a question:
* நானும் அப்படித்தான் நினைக்கிறேன். (Naanum appadittaan ninaikkiraen.) - This means "I think the same way".
* சரி, நீங்க என்ன நினைக்கிறீங்க? (Sari, neenga enna ninaikiringa?) - This means "Okay, what do you think?".
The best translation will depend on the specific situation and the relationship between the speakers.