You can ask questions in Spanish using question words, declarative sentences, inversion of subject and verb or voice inflection. Begin questions with an upside-down question mark.

Imperatives are used to give commands, orders and instructions. Positive commands use the 'tú' and 'vosotros' forms of the verb.

The present subjunctive tense is used to express doubt, possibility, requests, and after verbs of emotion. It is also used after certain phrases like 'cuando' and 'para que'.

Use the passive voice when talking about what is done to someone or something. You can form the passive voice by using the correct form of the verb 'ser' and the past participle.

Conjunctions are also known as connecting words and can be used to avoid repetition. Common Spanish conjunctions are 'y' (and), 'porque' (because), 'si' (if) and 'que' (that).

Suffixes are a small number of letters added to the end of a word which change its meaning. There are suffixes which can change adjectives into adverbs or adjectives into nouns.