Once a year ,a race is held for old cars.每年举行一次旧式小汽车比赛.去掉a,不能强调"一次".
Old car race is held Once a year .一年一度举行老式汽车竞赛.加an 强调这款“老式汽车竞赛”.
以上几种说法没有语法错误,表达意义略有差别,请仔细体会.
Once a year ,a race is held for old cars.每年举行一次旧式小汽车比赛.去掉a,不能强调"一次".
Old car race is held Once a year .一年一度举行老式汽车竞赛.加an 强调这款“老式汽车竞赛”.
以上几种说法没有语法错误,表达意义略有差别,请仔细体会.