搜搜做题作业网他来了三天了 it is three days since he came it has been three days
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：2024/08/17 08:59:03
他来了三天了 it is three days since he came it has been three days since he came 这两个有什么区别
都正确吗
都正确吗
it is three days since he came.
it has been three days since he came.
1. It is some time(一段时间) + since引导的时间状语从句 = It has been some time(一段时间)...
2. since引导的从句谓语为一般过去时,而主句是一般现在时或现在完成时.
3. 该从句的谓语动词是“瞬间性动词”时,从句正常翻译；
而如果该从句的谓语动词是“延续性动词”作,从句必须作否定翻译.
如：It is two hours since he left the classroom.
自从他离开教室以来,已经两个小时了.
It is three years since he worked there.
自从他不在那儿工作以来,已经三年了.
希望满意,祝您进步：）
再问： it has been years since i enjoyed myself so much as last night, 这儿可以用is代替has been吗
再答： 这个如例3第1例： It is two hours since he left the classroom. 自从他离开教室以来，已经两个小时了。
it has been three days since he came.
1. It is some time(一段时间) + since引导的时间状语从句 = It has been some time(一段时间)...
2. since引导的从句谓语为一般过去时,而主句是一般现在时或现在完成时.
3. 该从句的谓语动词是“瞬间性动词”时,从句正常翻译；
而如果该从句的谓语动词是“延续性动词”作,从句必须作否定翻译.
如：It is two hours since he left the classroom.
自从他离开教室以来,已经两个小时了.
It is three years since he worked there.
自从他不在那儿工作以来,已经三年了.
希望满意,祝您进步：）
再问： it has been years since i enjoyed myself so much as last night, 这儿可以用is代替has been吗
再答： 这个如例3第1例： It is two hours since he left the classroom. 自从他离开教室以来，已经两个小时了。
同义句 Three days_since he died.It three days since he died.
It has snowed for three days running.
What day is it in three days'
It is three days before Thanksgiving翻译
my watch has been going for three days and it has got run do
It was three days before that man came back
It has been three hours since he left his office.把has been 换
it kept-----for three days,
it happened after three days
It is three years since he smoked.
看两个英语句子.It is three years since he was a teacher.他不当老师有三年了.I
he has been a soldier for three years.改为同义句：It is three year