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It was +时点+when从句This is/was +第几次+that从句

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It was +时点+when从句This is/was +第几次+that从句 It's has been accepted it is/has been= It`s been a pleasure to talk to you.中 It`s 是It has 还是It is? It's been a pleasure knowing you.那个’s是has还是is还是was? it's always been you(It has always been it has been可以缩写成it's been it's been.的全称是不是 it has been... It has been的缩写 It’s been It is Tom 的缩写It’s Tom 这两者缩写后的发音是一样的吗? It is apparent that people's living standard has been greatly improve. It's been nice talking to you.为什么用is不用has? Davie's writing is so good that it has been compared___DickensA.to B.with选哪一个 john____ it for two hours,and he`s still watching now 1.has been 2.watching 3.has been watching4.is watching he's been 是什么的缩写在He's been learning English for six years and really loves it.是is还是has其他地方怎么区分 Its said that this kind of books ___.A .has been sold out B.is sold well coffee has been a part of people's lives for thousands of years,and it is still a favorite It's five years since Mike____to Tibet.A.came B.has been C.will come D.is coming It's ten years since we last met in Beijing?句型中is能否用has been来替换