帮助用户编辑一篇英文文章，包括检查拼写和语法错误，并提出修改建议。


以下是用户写的英文文章：
“Today I goed to the park with my best friend. We goed on the swing set and had a fun time. After, we had a picnic and eated sandwiches.”
Here is a corrected version of the article: 

"Today, I went to the park with my best friend. We went on the swing set and had a fun time. Afterward, we had a picnic and ate sandwiches."

Note that "went" is the correct past tense form of "go", and "ate" is the correct past tense form of "eat". Also, "afterward" is a better word choice than "after", and "had" is not needed before "a fun time".