用现在完成时说我们自从2000年就住在这儿 我认识是We have been here since 2000但有人说把b

用现在完成时说我们自从2000年就住在这儿 我认识是We have been here since 2000但有人说把b they have been here since 2000 i have lived here even since i was childhood意思是 我从小就住在这里 为什么 We have been here since 2011对划线部分提问.划线部分是since 2011 The Greens have lived here since 2000为什么要用现在完成时而不用 I have been here since 1976 这里的have 是实意动词吗?那么在现在完成时中是不是没有助动词 We have been studying english since we move here have been here 后面可不可以用since I have been busy since yesterday.现在完成时是have加过去分词,但这里的过去分词在哪里 英文翻译 她自从2000年就住在伦敦. 1 We have been here since ten years ago.-------------------- 现在完成时问题过去完成时不是说有两个表示过去的时间词时就用过去完成时么I have taught here since