Try:
INSERT INTO tablename (column_name1, column_name2) VALUES ('jayesh', 'Surat');
But do note that if you are doing this from a presentation language (C#, C++, VB, Python, PHP, ...) you should be using Parameterised Queries, not string concatenation. Exactly how you do that will depend on both the language you use, and the database type you are INSERTing into.