"about" 大约/大概:1.The interview lasted about an hour.2.Mary's mother is about 50 years old.3.He walked into the classroom just about two minutes ago.4.The restaurant is somewhere about here.5.The ra...大约在1998年，可以说about 1998吗Yes:(a) His father went to Malaysia in about 1998.(b) In about 1998, I fell in love with my neighbour's daughter.(c) At about 8 o'clock in the morning, the teacher came to my house.可是，我做的那道题说只能用around 1998,不能用about，这是特殊情况，about不可加年份