做某事有3年了,是不是都用for three years?

做某事有3年了,是不是都用for three years? for doing sth 和in order to do sth是不是都有为了做某事的意思? for three years同义词 He ( ) for three years. 英语翻译我学了3年英语.I have been study for three years,快打给多财富 My brother college for over three years.为什么用括号中的.有这种用法吗? 某些人都做某事,用英语怎么说 His grandfather died three years ago.(用for three years 改写句子) Tom has( )for three years for about three years(提问) We lived in America for about three years.[用for about three we lived in London for about three years?用for about three ye