Liu Lin has worn her Li-ning sportswear every day since she bought it last
问题描述：
Liu Lin has worn her Li-ning sportswear every day since she bought it last
答
刘琳自从上周买了一件李宁运动装之后,每天都穿着它.
Liu Lin has worn her Li-ning sportswear every day since she bought it last week
主语是Liu Lin
谓语是has worn
since自从,引导一个一般过去时的时间状语从句表示,has worn(穿)这个动作的起点从she bought it last week(自从上周买了)起,一直延续到现在还存在,所以主句中的谓语has worn 这个动作要用现在完成时.