English is a global language and it is essential for a second language learner to be proficient in it to be able to communicate effectively in different situations. It is the second language and has become wide spread language of television, newspaper, law, mass media, social media, documentation, technology, business and economy in our country. Keeping in view the importance of English language it is essential to teach it effectively so that students may be fluent and proficient in it. The ever increasing fame and demand of this language has also caused increased demand of students’ competency and proficiency in this language. The problem in Pakistan is that majority of the students, after reading English for many years as compulsory subject, are unable to use English proficiently. Purpose of this study was also to investigate about the effective teaching methodology for teaching English as second language in Pakistan. The research is based on the mixed method research approach. For quantitative paradigm data were collected through a close-ended questionnaire and for qualitative data structured observation was used. The data were analysed through SPSS software. Data were collected from four universities including government and private universities of Multan through convenient sampling. It was found that grammar translation method and Direct Method are mostly used by the teachers, and other methods are ignored. Majority of the teachers are not using appropriate teaching method according to the level and needs of learners and are not focused on practice of language skills, due to which, students are not proficient in English as second language. It was suggested that teachers should use appropriate teaching methods according to the needs of the learners. Furthermore, it was recommended that eclectic approach should be used for effective teaching of English as Second language.