it`s been 3 years .这句话对吗?是对于某件事来说,它已经过去了三年了.

it's seems like years since it's been it's been six years这句话什么时态 been 的作用与时态 it`s been 3 years .这句话对吗?是对于某件事来说,它已经过去了三年了. It's+been+in+Boston+for+over+250+years. it's been ten years 为什么不加for It's 3 years since I saw him last time.中的it's 能否换成has been? 同义句替换John’s grandmother has been dead for 3 years.It's three years ____ John's grandmother _____. It's been five or ten years from happenning for about 50 years怎么翻译呀? “It’s been five or 10 years from happening for about 50 years,” says Eric Berger, It's 3 years since I saw him last time. 中的is能否换成has been? 请说明原因好吗. 翻译 It's five years since he smoked It has been 2 years since we worked here It has been 3 years since he came here. it is 3 years since Tom has been abroad he's been in Japan for six years.=it ___ six years ___ he came to Japan lucy has been away from hei home for three years等于 it's three years ______lucy ___ __________ Lucy has been away from home for two years.（改同意句） It's two years since Lucy________. Lucy has been away from home for two years 句型转换 it's two years since Lucy（ ）（） I have been learning English for two years.=It's two years _____ I _____ to learn English.