Tenses

German Futur I is formed with werden + infinitive and is used to talk about future events, intentions, and predictions.

How to form and use the German Perfekt (present perfect) with haben or sein plus a past participle.

How to use the German Präteritum (simple past), especially for sein, haben and modal verbs.

Many common German verbs change their stem vowel in the du and er/sie/es forms of the present tense. These are called strong verbs and must be learnt individually.