This unit introduces students to the first of the past tenses (imperfect), with the forms of the regular and three irregular verbs and guidance as to the use of the tense. The latter will enable students to describe people and places in the past, talk about they used to do and compare the past and the present. This usage is supported by relevant time phrases and the verb acostumbrar (a), which can be used to describe habitual actions in the past where the imperfect would be appropriate. An introductory explanation and exercises on the very common Spanish impersonal se construction helps students to form passive and impersonal sentences. More on this is to be found in Unit 19.

This unit introduces students to the first of the past tenses (imperfect), with the forms of the regular and three irregular verbs and guidance as to the use of the tense. The latter will enable students to describe people and places in the past, talk about they used to do and compare the past and the present. This usage is supported by relevant time phrases and the verb acostumbrar (a), which can be used to describe habitual actions in the past where the imperfect would be appropriate. An introductory explanation and exercises on the very common Spanish impersonal se construction helps students to form passive and impersonal sentences. More on this is to be found in Unit 19.

In representing print in the context of the history of human knowledge more generally, the national libraries were at an advantage. However, while they could offer permanent exhibitions, whether of books or antiquities, they could not easily present them in the contexts of modern achievements. For this, the multitude of temporary exhibitions, presenting old and new objects side by side, offered another perspective. They also reached audiences unfamiliar with the fixed presentations whether in London or Paris.