Today, teachers of English are facing new challenges. As a language and as a school subject, English is in a process of transformation. Learners’ encounters with English are constantly changing, resulting in classrooms where experiences are diverse and proficiency levels vary widely. In such contexts, teachers’ professional development becomes increasingly important. This chapter draws attention to the need to include and promote language awareness as a central element in the education of preservice teachers learning the work of teaching English. With language awareness firmly cemented as a part of an English teacher’s professional practice, and with working approaches that emphasize both function and form, students can better become equipped as speakers and users of English in a globalized world.