Question

since引导的时间状语从句，从句里的主语和主句里的主语相同，从句里的主语能省略么。

我看了，但是从句的动词不是be动词，是实义动词的过去式，不能省略的话，又显得前后I太多了。

Answer 1

since介词 prep.
1.(表示时间)从…以来; 自从…之后
I have lived here since January.
自一月份以来, 我一直住在这里。
He had seen her only once since the meeting.
自从那次会议以来, 他只见过她一次。
He's been working in a bank since leaving school.
自从毕业后, 他就一直在一家银行工作。
I have not seen him since then.
从那以后我再也没见过他。
副词 adv.
1.从过去某时间以来[以后, 到现在]
He disappeared many years since.
他多年以前就不知去向。
Her husband died 10 years ago but she has since remarried.
她丈夫于十年前去世, 但她后来又嫁人了。
I've long since forgotten what our quarrel was about.
我早就忘掉我们为什么吵架了。
It was not long since that I returned.
我是在不久前回来的。
He came to London 3 years ago and has lived here ever since.
他三年前来到伦敦, 此后就一直住在这里。
连接词 conj.
1.自从(过去某事)以来[以后, 到现在]
Since I left college, I have not seen him.
自从我离开大学以后, 就没有见过他了。
They have never been to see me since I was ill.
自从我生病之后, 他们一直没来看过我。
Since I have owned a bicycle, I have gone to school by it every day.
自从我有了一辆自行车后, 我每天骑车上学。
I have known him ever since I was a child.
我自孩提时代起就已经认识他了。
It is ten years since she left me.
自从她离开我已经十年了。
It is five years since he left here.
他离开这儿已有五年了。
It is three years since I have seen him.
我已经三年没见到他了。
It was four months since we had been here.
我们已经有四个月没来这了。
His health is much improved since he gave up smoking.
他自戒烟以来, 健康状况大大改善了。
I met him last week.Since we left school, we had often written to each other.
上周我遇见了他。自从我们离开学校后, 我们曾经常互相写信。
The man has been drinking beer ever since the party started.
晚会开始以来, 那个男人就一个劲儿地喝啤酒。
She has been collecting stamps since she was a child.
她从小起就一直在集邮。
2.因为; 既然; 由于
Since it is late I shall go home now.
由于时间晚了, 我现在要回家了。
Since you are so sure of it he'll believe you.
既然你对此这么有把握, 他会相信你的。

Answer 2

非系动词be的情况下不能省略，如果觉得累赘生硬可考虑变换句式和说法

追问

时间状语从句可以换成分词形式么，是什么分词啊。

追答

现在分词和过去分词都可以，取决于主语和非谓语动词是主谓关系还是动宾关系

Answer 3

不能！从句也是一个句子，一般情况下（除了祈使句之外如GO!），一个句子是需要主语的~