介词since的用法(1)接时间点:如Ihavestayedinthatcountrysince1995.要求:谓v.用现在完成时,而且须是延续性动词。(2)接一段时间+ago:如Theyhavelivedinthathousesincetwoyearsago.要求:谓v.用现在完成时,而且须是延续性动词。(3)接时间状语从句:如IhavelovedhersinceImetherlasttime./Lilyhasstayedathomesincesheleftschool.要求:主句的谓v.用现在完成...
更新时间:2022-06-30标签: since的用法since用法介词 全文阅读