列出常见的英语语法错误，并提供纠正方法。
以下是常见的英语语法错误及纠正方法：

1. 主谓不一致：句子中主语和谓语的单复数不一致。例如，“The boys is playing basketball.” 应该改为 “The boys are playing basketball.”

2. 动词时态错误：动词的时态与上下文不符。例如，“I went to the store yesterday and I see my friend.” 应该改为“I went to the store yesterday and I saw my friend.”

3. 宾语前置错误：把宾语放在主语前面。例如，“To the park she went.” 应该改为 “She went to the park.”

4. 不完整的句子：缺少主语、谓语或宾语。例如，“Running in the park.” 应该改为 “He is running in the park.”

5. 不当使用介词：介词的使用不正确。例如，“I’m waiting since two hours.” 应该改为“I’ve been waiting for two hours.”

6. 并列连词错误：使用了错误的并列连词。例如，“I want to travel to Europe, but I don’t have money.” 应该改为 “I want to travel to Europe, and I don’t have money.”

7. 冠词错误：没有使用冠词或使用了错误的冠词。例如，“He’s going to bed.” 应该改为“ He’s going to the bed.”

纠正常见的语法错误，需要对英语语法有很好的了解。可以通过阅读语法书籍、参加语言课程以及多读写英语来提高语法水平。