i have learned it since three years ago. 这里since做介词?three years ago不是副词吗? 我来答 1个回答 #热议# 上班途中天气原因受伤算工伤吗? 晋义剑嫣 2020-03-10 · TA获得超过3.7万个赞 知道小有建树答主 回答量:1.2万 采纳率:31% 帮助的人:1172万 我也去答题访问个人页 关注 展开全部 since的用法参照一下解释:1.作为连词的since,其意义有两个:1)afterthelasttimewhen…自从…以来,以后2)continuouslyfromthelasttimewhen…从…以后,就一直…这是我们需要弄明白的第二个疑惑点。2.在since引导的状语从句,其谓语可以是一般过去时,也可以是现在完成时。但,其谓语动词是短暂动词还是延续动词或状态动词,其表达的意思就完全不一样了。 已赞过 已踩过< 你对这个回答的评价是? 评论 收起 推荐律师服务: 若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询 其他类似问题 2022-06-17 it was three years ago when i last visite you 这句话对吗 2023-02-07 been,three,years,we,it,since,has,here,left连词成句 2016-10-23 it's been three years since we last saw them这个it's为什么是it has?能否用It was 代替it's? 2 2020-06-23 对since two years ago提问 2021-03-21 I have learned a lot over three years里面那些是主语,哪些是谓 2012-08-16 it is two years since we have met 和it is two years since we met last. 语法上都通,但有什么区别呢? 4 2010-08-30 Has he been a docture for three years ago? 8 2012-11-01 他来了三天了 it is three days since he came it has been three days since he came 这两个有什么区别 3 为你推荐: