作业帮It's about three years since they＿here.是填came还是have been?
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/12 01:32:52
It's about three years since they＿here.是填came还是have been?
选came
since的四种用法
1） since +过去一个时间点（如具体的年、月、日期、钟点、1980,last month,half past six）.例如：
I have been here since 1989.1989起,我一直在这儿.
2） since +一段时间+ ago.例如：
I have been here since five months ago.我在这儿,已经有五个月了.
3） since +从句.例如：
Great changes have taken place since you left.你走后,变化可大了.
Great changes have taken place since we were here.我们走后,变化可大了.
4） It is +一段时间+ since从句.例如：
It is two years since I became a postgraduate student.我考上研究生有两年了.
since的四种用法
1） since +过去一个时间点（如具体的年、月、日期、钟点、1980,last month,half past six）.例如：
I have been here since 1989.1989起,我一直在这儿.
2） since +一段时间+ ago.例如：
I have been here since five months ago.我在这儿,已经有五个月了.
3） since +从句.例如：
Great changes have taken place since you left.你走后,变化可大了.
Great changes have taken place since we were here.我们走后,变化可大了.
4） It is +一段时间+ since从句.例如：
It is two years since I became a postgraduate student.我考上研究生有两年了.
It's about three years since they＿here.是填came还是have been?
Twenty years ______ passed since I came here.填的是 have 还是 has
it is two years since I came here还是it has been two years sin
Three years _____(have) passed since he came here.填什么?为什么?
It has been 3 years since he came here.
it‘s about fifteen years since they got married跟they have be
It’s three years since they got married.这句话是对是错?
Kitty came here three years ago=It ___ ___ ___ ___ since Kit
They have been in this city ＿ three years ago.(A.for B.about
I have been here for three years.=It is three years ______I_
It was three years since they worked here.这是高二的一道改错题,答案是把wor
they have been here since 2000