we don't know what has happened since yesterday since 不是跟延续性

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：2024/07/08 08:02:35

we don't know what has happened since yesterday since 不是跟延续性动词吗为什么用has happened
是不是happen也可做延续性的，

since后跟过去的某个时间,表示自那个时间起的一段时间,再如：
Tom has worked in this for three years.=== Tom has worked in this school since three years ago.
再问： since 前面的动词不是要用长动作的吗，happen是短动作啊
再答：句子的意思是：我不知道从昨天开始（以来）发生了什么。这里的happen是指接二连三地发生了什么事希望对你有启发，如对你有帮助，请记得及时采纳

we don't know what has happened since yesterday since 不是跟延续性 We______her letter last week.We don't know what has happened 英语翻译It has been 2 months since I first met you.I don't know We don't know when the accident________.A.has happened B.hap He has left since yesterday . I don't know what happened to her. Now we know what-----yesterday.A.was happened B.happened C.h We don't know what to do. what,we,can,don't,learn,know What We Don't Know 歌词 Since you know, so, don't you know you are immediately翻译成中文 I met Tom yesterday.We hadn't seen each other since we left