

We watched the fireflies glowing in the garden last night.
[wi ˈwɑtʃt ðə ˈfaɪərˌflaɪz ˈɡloʊɪŋ ˈɪn ðə ˈɡɑrdn̩ ˈlæst ˈnaɪt.]
Have you ever caught a firefly in a jar?
[həv ju ˈɛvər ˈkɔt ə ˈfaɪərˌflaɪ ˈɪn ə ˈdʒɑr?]
I'd never seen a firefly until I visited my grandparents.
[ˈaɪd ˈnɛvər ˈsin ə ˈfaɪərˌflaɪ ənˈtɪl aɪ ˈvɪzətəd ˈmaɪ ˈɡrændˌpɛrənts.]
"firefly" is in the lesson "Insects" (Level 16), along with 21 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.