

その話を聞いたら、母はきっと驚くと思います。
急に大きな音がして、驚きました。
田中さんは何があっても驚かない人です。
"おどろく(驚く)" is in the lesson "Adjectives 4" (Level 17), along with 11 other useful words. LinDuo has 180 topic lessons like this one, 2,379 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.