it is…… since……句型中is 可用was ,has been替代吗?
it is…… since……句型中is 可用was ,has been替代吗?
It is /was +时间+ since… 其中is has been was had been.与强调句的区别
it is + 时间段 + since…和It has been+ 时间段 + since的问题
It is/has been…since… It was/will be…before… 这两个句
求英语大手解决困惑至于It is +一段时间+since…的句型与It has been +一段时间+since…意思相
It is/has been +时段+since从句 It was/be+时段+before从句 用些这英语句型造个句
句型 it is ...since it has been .since 还有意思一样的么?还有下面这道题
一个英语问题句型“It’s / It has been + 一段时间 + since + 时间状语从句”中什么时候用is
强调句型it is/was .that 中is/was 是否还可以有其他形式 如has been 等等
It's ten years since we last met in Beijing?句型中is能否用has been
It is/has been + since sb +
单选 it is 30 years ____we last met.句型it is ……since 和it is~bef