It has been used everywhere in the world.是个什么时态?

It has been used everywhere in the world.是个什么时态? people observe it everywhere in the world it has been used和it has been in use有什么区别吗 It has been used to detect gold which has been buried in the it can be found everywhere in the world这句话前面用个it是什么结构,祥解. The computer has been widely used in many ways by____. Friendship has always been the greatest thing in the world, He has already been to ( ) every country in the world. he has been used to the life in the countryside.为什么be used t has been used to detect gold,这是什么时态?句中的used to 是表示过去常常做某事吗? has been used和has used有什么区别, The car has been used for many years when it was sold to the