 Hello! Two central topics. Language comparison and language reconstruction constitute the focus of this unit, which outlines the linguistic development from proto-languages via more or less well-documented languages to the early phases of English. As usual, you should start with the virtual session. And also if you wish, use the question sheet as a default guide. Eventually, you should be able to answer questions such as, can we reconstruct formal languages? And then what did they actually look like? And then of course, what is Indo-European? Well, and this unit's mastery worksheet is a dynamic multiple choice test with two levels, a standard level where you need 100% and an advanced level where 60% correct answers will suffice. To deepen your knowledge, use the practical sheet, which exhibits several problems related to the proto as well as to the existing languages. So, we wish you good luck with this unit and we'll hope you'll enjoy it.