

You need to screw the shelf to the wall.
[jə ˈnid tu ˈskru ðə ˈʃɛlf tə ðə ˈwɔl.]
He screwed the lid back on the jar.
[ˈhi ˈskrud ðə ˈlɪd ˈbæk ˈɔn ðə ˈdʒɑr.]
Dad is screwing the legs onto the new table.
[ˈdæd ˈɪz ˈskruɪŋ ðə ˈlɛɡz ˈɔntə ðə ˈnu ˈteɪbəl.]
"screw" is in the lesson "Verbs 12" (Level 24), 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.