做否定句 have you been learning english for ten years

做否定句 have you been learning english for ten years Have you been collecting shells for five years?做否定句 ①We have been learning English for three years.(改为同义句） 同义句He has been learning English for six years I have been playing piano for ten years.同义句 这句英语有没有错We have been learning English for about 3 years.语法有没 英语难题!I have been learning English for two years =It is years I have been learning English for two years.=It's two years _ learning,English,have,how,you,been,long(?)连词成句 我说I have been learning English for many years.我的外教说换成studyin Question: I have been learning English for about 7 years. &n I have been learning english for years,but I still can’t com