INSTITUTO SUPERIOR TECNOLÓGICO MANUEL ENCALADA ZUÑIGA Hi everyone, here you have an extra explanation of each unit which is so essential and it should be reviewed before to complete the activities in your book. In each unit there are 5 lessons and in each of them you have the aim that we want to achieve at the end of every lesson. A lesson contents grammar and vocabulary that you have to study by yourself checking the explanation in your book, but if it is difficult to understand, here, you have some links where you are going to find several explanations about the same topics. At the end of each unit you have to do some homework which has to be sent to my e-mail: eizer_fab@hotmail.com If you have any doubts you can send me an email and I will be pleased to help you. Remember! If the links and the explanations in your book is not enough every Saturday I will be onlive via Skype in order to respond any doubts you have. Unit 4 -- Homework Unit 5 --...