This paper explores the contemporary phenomenon of English as a global language and try to analyze how and why the language became so dominant in Taiwan. As most other countries, English has been successfully promoted and has eagerly adopted in Taiwan after War World 2. The reach and spread of English across the globe raises the question of language and power beyond colonial contexts. In Taiwan, English is spoken as a progressive language without a British colonial legacy. What is important is that this change was not felt to be something forced from outside. For English, there have always been linguistic romanticists. Manifestly, the spread of English is a highly political issue. During the period of globalization, English Language Teaching (ELT) has become an imperialism of education. The paper overviews the history of English imperialism, as a world language, and the influence on the third world especially in Taiwan. It will survey the spread of English and examine its impact and review critically to explain the spread of English from specific ideological standpoints.