since引导时间状语从句，从句主语和主句主语一致时，是否可以省略主语，写成since+doing sth?
while walking along the street last night, I heard a voice and felt very scared.
While walking along the street, I met an old friend of mine.
当状语从句的主语和主句的主语一致的时候，可以把状语从句的主语和系动词一起省略。但是一般不是在since引导的状语从句中哦。
1. since从句的谓语动词是终止性动词照字面意思理解。如：
I’ve been feeling down since I lost my job. 自从失去工作后,我的情绪一直处于低潮。
2. since从句谓语动词延续性动词，且为现在完成时时，仍然按字面意思理解。如：
She has never come to see me since I have lived in the city. 自从我住到城里，她就一直不来看我。
3. since从句谓语动词延续性动词，且为一般过去时时，按与字面意思相反的意思理解。如：
I have made great progress since I was ill. 我自病愈以来取得了很大的进步。
4.since前有ever，或从句谓语动词是be且后接表示人成长过程中的某个阶段或年龄的名词、形容词时，仍然按字面意思理解。如：
I have lived here ever since I was a child. 我从还是个孩子时就一直住在这儿。追问
这个我已经搞清楚了，since作连词和介词意义相同，“自从……以来”作介词时带动名词短语的结构为since+doing sth.谢谢！
They have been good friends since they met last Sunday.
=They have been good friends since their meeting last Sunday.追问
倒数第5个空:自从我搬到中国回去了两次。moving前面填after还是since呢？谢谢！
追答since
本回答被网友采纳请采纳谢谢帅气又萌萌哒的网友追问
it's easy for me.for me 作什么状语？
为什么呢？
追答不是所有连词都有这个用法
追问确定吗？
追答确定
追问
这是初二课本上的题，倒数第5个空应该填after还是since呢？
一、状语从句主谓成分的省略，须遵循下面原则：
（一）当从句的主语与主句的主语一致时，从句可以省略主语，从句的谓语动词采用其V-ing结构。例如：
Although working very hard, he failed in the final exam. (Although he worked very hard,…)
After taking the medicine, she felt much better. (After she took the medicine,…)
If going there by air, we’ll have to pay twice the fare. (If we go there by air,…)
为什么呢？
追答只有在从句的谓语动词是系动词be时才可以。
追问一、状语从句主谓成分的省略，须遵循下面原则：
（一）当从句的主语与主句的主语一致时，从句可以省略主语，从句的谓语动词采用其V-ing结构。例如：
Although working very hard, he failed in the final exam. (Although he worked very hard,…)
After taking the medicine, she felt much better. (After she took the medicine,…)
If going there by air, we’ll have to pay twice the fare. (If we go there by air,…)
那咱俩说的不是一个语法
但都是省略句式里的
你这个没有提到谓语，只提到了主语
你是高几啊
追问初二。
倒数第五个空，答案是after。after不是用在过去时吗？
追答你是说moving前面吗
afte不是只用在过去时的，用在什么时态视情况决定
追问moving前面的空，应该填after吗？
追答对啊
追问我说的那个省略结构不适用since吗？
词典里也有since跟动名词的说法。
追答你得有具体的题啊
追问就说这题么，我觉得用since也行呀。
追答从搬到中国时到说话时就是一段时间呀。
追答你可以先仔细研究下since 和after 的区别
不采纳我的回答吗
追问我觉得应该用since,主句是延续性动词，从句是表时间段的时间状语。我觉得那本书的答案有问题。上午去了教育书店，看了教师用的教案书上答案是since,编书店这本教案的人和编课本的是一帮人。
问题已经搞清楚了，打电话问过出版社了，书上答案错了，给我寄来两本参考书作为鼓励。哈哈！
