6161 | Dr. Muhammad Uzair Parametric Difference Between English And Urdu In Terms Of Null Subject Parameters. Ilkogretim Online - Elementary Education Online, 2020; Vol 19 (Issue 4): pp. 6161-6171 http://ilkogretim-online.org doi: 10.17051/ilkonline.2020.04.765024 Parametric Difference Between English And Urdu In Terms Of Null Subject Parameters. Dr. Muhammad Uzair Department of English (GS) National University of Modern Languages, Islamabad Dr. Ubaidullah Khan* Department of English Language & Applied Linguistics Allama Iqbal Open University, Islamabad Email: ubaidkhan81@gmail.com Muhammad Saqib Zaigham English Language Centre Taif University, Saudi Arabia Dr. Malik Ajmal Gulzar Department of English Language & Applied Linguistics Allama Iqbal Open University, Islamabad Abstract In UG, principles and parameters postulate that innate language faculty possess finite set of fundamental principles common to all languages and seeks to explain the variation between languages through parameters. In other words the parameters determine syntactic variability amongst languages within pre-set limits for a particular parameter. This study takes into account one of such parametric variations among the languages i.e. phenomenon of null-subject parameter and explores whether Urdu language is null subject / pro-drop or not. The study analyses an exchange between teacher and mother. It reveals that null-subject constituent is not only a characteristic feature of English syntax but a feature of Urdu syntax as well. Moreover, it verifies that contrary to English structure, Urdu is pro-drop or null subject language within pre-set limit i.e. binary principle. This study is significant as it contributes fresh linguistic data for the principles and parameter theory. 1. Introduction Every complete sentence consists of two parts: a subject and a predicate. The subject is sometimes called ‘the naming part of a sentence or clause’ (Nordquist, 2019)whereas a predicate is the part of a sentence, or a clause which tells about ‘what the subject is doing or what the subject is’ (How to identify subject and predicate in a sentence, 2019). The subject-predicate relation has long been assumed by grammarians to be a basic structural feature of all languages. However, it is a striking fact that the languages in which sentence remains grammatical and meaningful without an overt subject with a finite verb are characterized as null-subject or pro-drop languages. In such languages ‘the content of null