| 16.1 | Interrogative pronouns - an introduction |
| 16.2 | quién |
| 16.3 | cuál |
| 16.4 | qué |
| 16.5 | cómo |
| 16.6 | cuánta, cuánto, cuántas, cuántos |
| 16.7 | por qué |
| 16.8 | dónde |
| 16.9 | Interrogative pronouns in exclamations |
| 16.10 | gustar |
| 16.11 | Vocabulary |
| 16.12 | Exercise |
| 17.1 | Verbs of changes - an introduction |
| 17.2 | Overview over the system |
| 17.3 | volverse |
| 17.4 | convertirse en |
| 17.5 | ponerse |
| 17.6 | hacerse |
| 17.7 | quedarse |
| 17.8 | Focussing on the change |
| 17.9 | resultar |
| 17.10 | llegar a ser |
| 17.11 | Vocabulary |
| 17.12 | Vocabulary |
| 17.13 | Vocabulary |
| 17.14 | Exercise (verbs of changes) |
| 18.1 | Cardinal numbers |
| 18.1.1 | veinticinco and diecisiete, but treinta y tres and cuarenta y ocho |
| 18.1.2 | un, uno, una |
| 18.1.3 | ciento |
| 18.1.4 | ciento in plural forms |
| 18.1.5 | Singulars on the hundred |
| 18.1.6 | mil and millión in plural form |
| 18.1.7 | un millón de |
| 18.1.8 | no un before cien and mil |
| 18.1.9 | More examples |
| 18.2 | Ordinal numbers |
| 18.2.1 | Ordinal numbers change |
| 18.2.2 | Ordinal numbers from 1 to hundred |
| 18.2.3 | Ordinal numbers beyond one hundred |
| 18.2.4 | Use of cardinal numbers instead of ordinal numbers |
| 18.2.5 | Every single element of an ordinal number is changed |
| 18.3 | Fractions |
| 18.3.1 | Formation of fractions |
| 18.3.2 | In Latin America fractions are used as ordinal numbers |
| 18.3.3 | Fractions are masculine, appended with de |
| 18.3.4 | Plural of fractions |
| 18.4 | Collective numbers |
| 18.5 | Vocabulary |
| 18.6 | Exercise (cardinal numbers) |
| 18.7 | Exercise (ordinal numbers) |
| 18.8 | Exercise (fractions) |
| 19.1 | Expressions of time - an introduction |
| 19.1.1 | Expressions of time in Spanish |
| 19.1.2 | Asking the time |
| 19.1.3 | Expressions of time in connection with prepositions |
| 19.2 | Expressions of date |
| 19.2.1 | Expressions of date in connection with prepositions |
| 19.2.2 | Months |
| 19.2.3 | Expressions of dates with years |
| 19.2.4 | Giving a date with the weekday |
| 19.3 | Week days |
| 19.4 | Dates in centuries and decades |
| 19.5 | Seasons |
| 19.6 | Vocabulary |
| 19.7 | Exercise (expressions of time) |
| 19.8 | Exercise (expressions of date) |
| 21.1 | Future tenses |
| 21.1.1 | Formation of future I |
| 21.1.2 | Use of future I |
| 21.1.3 | Future I as imperative |
| 21.1.4 | Future I as expression of uncertainty |
| 21.1.5 | Future I as anticipation of the opinion of the discussion partner |
| 21.2 | Irregular verbs in future tense |
| 21.3 | Do not use future tense after cuando |
| 21.4 | Future II |
| 21.4.1 | Formation of future II |
| 21.4.2 | Use of future II: description of an action that will be finished in the future |
| 21.4.3 | Presumption about events of the past |
| 21.4.4 | Possible tenses after cuando and si |
| 21.5 | Vocabulary |
| 21.6 | Exercise (future I) |
| 21.7 | Exercise (future II) |
| 21.8 | Repetition |
| 21.8.1 | Exercise (get, become, turn) |
| 21.8.2 | Exercise (date and time) |
| 21.8.3 | Exercise (numerals) |
| 23.0 | Suffixes - an introduction |
| 23.1 | diminutivo |
| 23.1.1 | Formation of diminutivo with -ito |
| 23.1.2 | Nouns with -ito |
| 23.1.3 | Adjectives with -ito |
| 23.1.4 | Adverbs with -ito |
| 23.1.5 | Formation of diminutivo with -cito |
| 23.1.6 | Nouns with -cito |
| 23.1.7 | Adjectives with -cito |
| 23.1.8 | Words of single syllables form the diminutivo with -ecito |
| 23.1.9 | Formation of diminutivo with -illo |
| 23.2 | Aumentativo |
| 23.2.1 | Formation of aumentativo with -ón |
| 23.2.2 | Formation of aumentativo with -azo |
| 23.2.3 | Formation of aumentativo with -ote |
| 23.3 | despectivo |
| 23.4 | Exercise (diminutivo and aumentativo) |
| 23.5 | Exercise (aumentativo) |
| 24.1 | Irregular verbs - an introduction |
| 24.2 | Verbs that change their stem in imperfecto |
| 24.3 | Genuine irregular verbs |
| 24.3.1 | Some forms get a g: tener |
| 24.3.2 | concluir |
| 24.3.3 | c changes to zc before e and o: conocer |
| 24.3.4 | e changes to ie: pensar |
| 24.3.5 | o changes to ue: dormir |
| 24.3.6 | e changes to i: medi |
| 24.3.7 | i changes to ie: adquirir |
| 24.3.8 | j and g are added: traer |
| 24.4 | Derived irregular verbs |
| 24.4.1 | c changes to qu: buscar |
| 24.4.2 | g changes to gu: pagar |
| 24.4.3 | c changes to z: esparcir |
| 24.4.4 | g changes to j: dirigir |
| 24.4.5 | gu changes to g: distinguir |
| 24.4.6 | i changes to y: atribuir |
| 24.5 | Exercise (conjugation) |
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