In this part four language structures are presented in four sentences respectively. By placing the structures at the starting point of the unit, we get the message that structure-based approach is here to stay. The first three structures concern the actions expressed by the different verb forms, i.e. the present perfect continuous, the past continuous and the past perfect continuous. The fourth one varies from the previous three in that the use of past continuous tense is not expressing action, but rather as a polite form of request. In these four structures selected, both language form and language function are included. It is a good idea to state the objectives of the unit at the beginning of the lesson, but it may appear quite boring for the students to read the language structures the first thing of the day of their study. Besides, the structures seem rather miscellaneous and unsystematic because they are not neatly related or focusing on one particular grammatical phenomenon. What's more, it’s likely that the teacher will explain these structures in a traditional way as is normally done in the presentation stage of the lesson and maybe will repeat things that students have already known, which can increase the boredom.