

Das Essen in diesem Restaurant ist exzellent.
[das ˈɛsn̩ ˈɪn ˈdiːzəm rɛstoˈrɑ̃ː ˈɪst ɛkstsɛˈlɛnt.]
The food in this restaurant is excellent.
Sie haben eine exzellente Arbeit gemacht, vielen Dank.
[ˈziː ˈhaːbn̩ ˈaɪ̯nə ɛkstsɛˈlɛntə ˈarbaɪ̯t ɡəˈmaxt, ˈfiːlən ˈdaŋk.]
You did an excellent job, thank you very much.
Du sprichst wirklich exzellent Englisch, finde ich.
[ˈduː ˈʃprɪçst ˈvɪrklɪç ɛkstsɛˈlɛnt ˈɛŋlɪʃ, ˈfɪndə ˈɪç.]
I think you speak really excellent English.
"exzellent" is in the lesson "Praises" (Level 36), 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.