Çay sever misin?
English: Do you like tea?
Turkish does not use a helper verb like 'do' for questions or negatives. Instead, questions are formed with question particles and negatives with suffixes or words.
Use the question particle after the verb or noun for questions. Use negative suffixes or 'değil' for negatives.
Çay sever misin?
English: Do you like tea?
O burada çalışmıyor.
English: She does not work here.
Onlar bugün oynamıyor.
English: They do not play today.
O İngilizce konuşuyor mu?
English: Does he speak English?