

Sure, I can help you.
[ˈʃʊr, aɪ kən ˈhɛlp ˈju.]
Can I use your phone? Sure.
[kən aɪ ˈjuz jər ˈfoʊn? ˈʃʊr.]
Sure, let's meet at six.
[ˈʃʊr, ˈlɛts ˈmit ət ˈsɪks.]
"sure" is in the lesson "Adverbs 3" (Level 35), 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.