Yesterday I went to the park with my friend. We had a lot of fun playing football. After the game, we decided to take a walk in the garden. We saw many beautiful flowers and trees. Suddenly, we heard a strange noise come from the bushes. We were frightened and ran towards the exit. But, we found that the gate was locked. We try to find someone to help us, but no one was there. Then, we heard the noise again and it sounded closer. Finally, a man came and unlock the gate for us. We were relieved and thanked him for his help.
答案解析：
1.错误：yesterday I went to the park
更正：Yesterday, I went to the park
解析：句子开头应有逗号分隔时间状语和主句。
2.错误：We try to find someone
更正：We tried to find someone
解析：根据上下文，这里应该使用过去时，与上文的“yesterday”和“went”保持一致。
3.错误：we heard a strange noise come from the bushes
更正：we heard a strange noise coming from the bushes
解析：这里“noise”和“come”之间存在逻辑上的主谓关系，应使用现在分词形式表示主动和进行。
4.错误：But, we found that the gate was locked
更正：However, we found that the gate was locked
解析：在英语中，“but”和“however”都可以表示转折，但“however”后面通常加逗号，而“but”则不加。
5.错误：a man came and unlock the gate for us
更正：a man came and unlocked the gate for us
解析：根据上下文，这里应该使用过去时与“came”保持一致。
6.错误：We were relieved and thanked him for his help
更正：We were relieved and thanked him for his help.
解析：此句语法上没有错误，但加上句号可以使句子结构更清晰。
7.错误：无
更正：在“we heard the noise again and it sounded closer”之前添加“Shortly afterwards,”
解析：为了使叙述更加连贯，可以添加一个时间状语“Shortly afterwards”来描述听到第二次声音的时间。
更正后的短文：
Yesterday, I went to the park with my friend. We had a lot of fun playing football. After the game, we decided to take a walk in the garden. We saw many beautiful flowers and trees. Shortly afterwards, we heard a strange noise coming from the bushes. We were frightened and ran towards the exit. However, we found that the gate was locked. We tried to find someone to help us, but no one was there. Then, we heard the noise again and it sounded closer. Finally, a man came and unlocked the gate for us. We were relieved and thanked him for his help.
