1 our parents are at home(父母两个人,所以be动词用复数are)
2 our parents are in the park(同上)
备注:在家 at home 在公园 in the park 固定短语
3 I am doing homework at home
1 our parents are at home(父母两个人,所以be动词用复数are)
2 our parents are in the park(同上)
备注:在家 at home 在公园 in the park 固定短语
3 I am doing homework at home