Learn German: Wir haben das Feuer gestern gesehen.

In spoken German, the Perfekt tense (haben + past participle) is the most common way to talk about the past. While it translates literally as "have seen", English speakers naturally just say "saw" in this situation.

Since we are learning about past participles that end in -t, why does gesehen end in -en?

Not all verbs follow the ge-...-t pattern! The verb sehen (to see) belongs to a group of 'strong' verbs that keep the -en ending in their past participle form. To make it, you just add ge- to the infinitive: ge- + sehen = gesehen.

Why is gesehen placed at the very end of the sentence?

This is a strict rule for the German Perfekt tense. The helping verb (haben) takes the normal second position in the sentence, and the past participle (gesehen) is pushed all the way to the very end.

Could we change the word order and put gestern before das Feuer?

Yes! You can absolutely say Wir haben gestern das Feuer gesehen. In fact, putting time (gestern) before the object (das Feuer) is a very common German word order rule. Both versions are grammatically correct and mean the same thing.