1.Jennystartedtoplaythepianowhenshuwassixyearsold.
划线部分是:whenshuwassixyearsold
2.PandaTuantuanlivedformorethantwoyearsinTaiwan.
划线部分是:formorethantwoyears
3.TheywenttoHollywoodfourtimes.
划线部分是:four
4.MyparentsreachedHangzhoubytrain.
划线部分是:train
5.ZhangHanwatchedaballetatthetheatrelastnight.
划线部分是:atthetheatre