逗号后面不一定要加连接词，要看你这么用。I love going to the park, but I must finish my homework first.orThat game was fantastic, I wish I could play it again.句号后面除了要注意大小写，其他都没什么问题。
句号后面可以重新起一个句子了，“,”后面可以不加连接词吧
