since的时态是什么

回答

爱扬教育

2022-04-13

since，副词常用于现在完成时或过去完成时，介词常用于现在完成时或过去完成时。
since后面从句用一般过去时。

扩展资料

　　It's a long time since they left.

　　他们已经离开很久了。

　　It's been two weeks now since she called.

　　她到现在已经有两个星期没来电话了。

　　I had been out since I was 17.

　　我从17岁起就公开我是同性恋。

　　The children are completely out of control since their father left.

　　这些孩子自他们的父亲离开后就无法无天了。

　　It's been an age since we've seen them.

　　我们有很长一段时间没有见到他们了。