It's been in use.这是什么时态,如何理解它的用法?

It's been in use.这是什么时态,如何理解它的用法? It's no use regretting what has been done. it has been used和it has been in use有什么区别吗 改写句子：It has been in use since 1998.(用in 1998改写句子） it's a nice car._____ have been in it It's+been+in+Boston+for+over+250+years. It's all you can do: use what's been given to you 什么歌It's all you can do use what's been given to you 高潮部分的词~ It's been awhile. it's been coverd.. 1 in business and s()2it is s（）in Britishwe use English in business and s()?it is s（）in British,the United states,Australia. 习题的讲解二（初二英语）It has been in use since 1998( 用in 1998改写句子）答案：It was in used in 1998可不可以用：It started to use in 1998.why? l can use it in the hot s( ) or in the c ( ) winter 英语翻译Animals can only use the sun's energy after it has been changed into food by plants. Animals can only use the sun's energy (能量) after it has been changed into food by plants如何翻译 求翻译 Animals can only use the sun’s energy after it has been changed into food by plants 英语翻译Animals can only use the sun's energy (能量) after it has been changed into food by plants 英语翻译Two neighbors had been fighting each other for nigh on four decades.Bob buys a Great Dane and teaches it to use the bathroom in Bill's yard.For one whole year Bill ignores the dog.So Bob then buys a cow and teaches it to use the bathroom 英语翻译1、This product has been accepted by the U.S.Department of Agriculture for use according to label directions in official Federal meat,poultry,and egg producing establishments.2、It is a violation of Federal law to use this product in a