It’s a long time since he studied English 主句是完成时吗,怎么没有have

来源：学生作业帮编辑：搜搜做题作业网作业帮分类：英语作业时间：2024/04/30 13:43:10

是现在时
再问： since句型主句不是要用完成时
再答： 1) since +过去一个时间点　(如具体的年、月、日期、钟点、1980, last month, half past six)。　 I have been here since 1989. 　　 2) since +一段时间+ ago 　 I have been here since five months ago. 　 3) since +从句　　 Great changes have taken place since you left. 　 Considerable time has elapsed since we have been here. 　 4) It is +一段时间+ since从句　 It is two years since I became a postgraduate student. 你的应该是第四种情况

It's a long time since还是It has been a long time since Here are signs that he is _________．It’s a long time since h 如何把He said "I have studied English since I was a boy."改为间接引语 it's a long time since i last saw you It's a long time since i saw you last. it's a long time since we met last It's a long time since …… 后加什么时态是固定的吗还是看情况 1.It's a long time since I left my hometown.A long time __ _ It's a long time since it raimed last time帮忙翻译下这句话, It is a long time since he moved here ,he must have___here.A It's been a long time since I last saw a film.还是It's a long it's been a long time since I------.How are you?A.had last s