

Das ist mein letzter Tag hier.
[das ˈɪst ˈmaɪ̯n ˈlɛtstɐ ˈtaːk ˈhiːɐ̯.]
This is my last day here.
Ist heute dein letzter Arbeitstag?
[ˈɪst ˈhɔɪ̯tə ˈdaɪ̯n ˈlɛtstɐ ˈarbɪtsˌtaːk?]
Is today your last day at work?
Das war wirklich mein letzter Versuch.
[das ˈvaːɐ̯ ˈvɪrklɪç ˈmaɪ̯n ˈlɛtstɐ fɛɐ̯ˈzuːx.]
That really was my last try.
"letzter" is in the lesson "Adjectives 7" (Level 45), along with 11 other useful words. LinDuo has 180 topic lessons like this one, 2,375 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.