如：he told me the way(that / in which)he solved this problem.(that 在定语从句中不作成分） 补充： 2、表示地点时,that(where=介词+which)也可省掉.如：i have never been to the places(that/where /in which)the Indians live.（that在定语从句中不作成分 补充： 3、表示时间时,that(=when=介词+which)也可省略.如：i still remember the days (that/when/on which)i helped my father on the farm. 补充： 同时,that在宾语从句中也是可省略的.