题目内容：

英语改错：1.I`m good at play football.2.They have big breakfast today.

优质解答

英语改错：
1.I`m good at play football.
应改为：I`m good at playing football.
固定用法：be good at doing sth.擅长于做某事
2.They have big breakfast today.
应改为：They have a big breakfast today.
因为你的breakfast之前未加冠词,所以要加上a.