

Das Brot von gestern ist hart.
[das ˈbroːt ˈfɔn ˈɡɛstɐn ˈɪst ˈhart.]
Yesterday's bread is hard.
Ist die Matratze sehr hart?
[ˈɪst ˈdiː maˈtratsə ˈzeːɐ̯ ˈhart?]
Is the mattress very firm?
Die Eier sind leider zu hart geworden.
[ˈdiː ˈaɪ̯ɐ ˈzɪnt ˈlaɪ̯dɐ ˈtsuː ˈhart ɡəˈvɔrdn̩.]
Unfortunately, the eggs got too hard.
"hart" is in the lesson "Properties" (Level 26), along with 9 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.