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I skated for two hours有何區(qū)別? A: How long has Alison been skating? B: She’s been skating for 5 hours. A: How long did Sam skate? B: He skated for 4 hours. A: How long has Victor been skating? B: He’s been skating for 5 hours. A: How long did Celia skate? B: She skated for two hours. 1. 2. Answer the questions: ? Who stopped skating? ? Who is still skating? ? Who won the first place in the skating marathon? Jackie Chan 1954:be born 1961~2021(now): act(50) He has been acting for 50 years. How long has Jackie Chan been acting? He has been acting since he was 7 years old. He has been acting since 1961. When did Jackie Chan start acting ? He started acting in 1961. A: How long has YaoMing been playing basketball ? B: He has been playing basketball for 22 years.