1.I have been in Beijing for three years.
2.He has been away from home for two weeks.
3.Kate has have that piece of clothes for three days.
4.The meeting has been off for half an hour.
5.可数名词
6.不可数名词
7.或者为可数名词或者为不可数名词
1.I have been in Beijing for three years.
2.He has been away from home for two weeks.
3.Kate has have that piece of clothes for three days.
4.The meeting has been off for half an hour.
5.可数名词
6.不可数名词
7.或者为可数名词或者为不可数名词