CSG004

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Contents

ix

Yerbs,

1

Introduction

UNIT 1. The Present Tense of Regular Yerbs, Irregular and Verbs with Spelling Changes

Regular Yerbs in the Present Tense 2 When Is the Present Tense Used in Spanish? 4 Irregular Yerbs in the Present Tense 8 Yerbs with Spelling Changes in the Present Tense 12 Dar, Haber, Hacer, and Tener in Expressions with a Special Meaning 14

18

27

UNIT 2. The Present Tense of Verbs with Stern Changes

Yerbs Ending in -ar and -er 18 Yerbs Ending in -ir 22 Yerbs Ending in -uir 24

UNIT 3. Ser and Estar

Similarities and Differences Between Ser and Estar 27 When Is Ser Used in Spanish? 28 When Is Estar Used in Spanish? 30

Adjectives That Change Their Meaning When Used with Either Ser or Estar 32 Expressions with Estar 33

35

UNIT 4. The Preterit Tense

Regular Yerbs in the Preterit 35

When Is the Preterit Used in Spanish? 36

Yerbs with Spelling Changes in the Preterit 39

Stem-Changing Yerbs in the Preterit 42

Irregular Yerbs in the Preterit 44

Yerbs with a Special Meaning in the Preterit 47

49

UNIT 5. The Imperfect Tense

Formation of the Imperfect 49

Irregular Yerbs in the Imperfect 51

When Is the Imperfect Used in Spanish? 52

The Imperfect and the Preterit in the Same Sentence 56

UNIT 6. Morę About the Preterit and the Imperfect

Summary and Contrast of the Preterit and the Imperfect 59 Yerbs with a Special Meaning:    Ponerse, Volverse, and

Hacerse 65

59