ever since

ever since
自那时起直到现在
She's been piling up money ever since she got the job.
自从得了那份工作以来，她一直在攒钱。
We've been friends ever since we met at school.
自从我们在学校认识之后，我们就一直是好朋友。
He's been lying low ever since I asked him for the money he owes me.
自从我催他还钱，他就不露面了。
He's been in the doldrums ever since she left him.
自从她离开他以来，他一直很消沉。
He's been a thorn in my side ever since he joined this department.
他自从到了这个部门就总让我不得安生。
I went to the U.S. in 1956 and lived there ever since.
我1956年去了美国，从那以后就一直住在那。

详解：

1.ever since 的结构：(作为连词)=since 完成时态---- ever since +主+动词简单过去式
例：I have known him ever since he was a child.
他从小我就认识他了。
这种用法同since 差不多，不过 ever since 比 since 用得少。
再如：We have lived in Shanghai ever since we came to China.(自从我们来到中国之后就住在上海。)
2.以上所说的 ever since 作为连词。
ever since 也可作为副词，解释“此后”（就一直...）
例：1）He fell ill at Christmas and has been ill ever since.
他在圣诞节生病了此后就一直不适。（has + be ill）
2）He left home last year and has been away ever since.
他去年离家走了，此后一直在外面。（has + be away）
3）He fell off his horse a week ago and has been in bed ever since.
一周前他从马背上跌下来，从那以后就一直躺在床上。
4）He went to Turkey in 1950 and has lived there ever since.
他在1950年去土耳其，此后就一直住在那里。
3. has not been able to 这实际上就是 be able to 加上 have 罢了。所谓 be able to 就是“有可能”不是“能”（can）。如果一直，始终没有可能就是has not been able to ,这很简单。
如果 it has not been easy. 就是“那件事一直不是轻而易举的。”完成时态不一定都解释为“已经”，有时要解释为“一直”。

even though<-->face to face