请帮我修改以下这段文字：


这是一段需要修改的文本：
“Their are a lot of grammatical errors in this text. Im not sure who wrote it, but they need to learn better grammar.”
以下是修改后的文本：
```
There are a lot of grammatical errors in this text. I'm not sure who wrote it, but they need to learn better grammar.
```