It’s going to be so much fun (شامي) 这个在 阿拉伯语 里怎么说？

查看来自AI monga的回答

Formal Arabic:
```
سيكون ممتعًا جدًا
```

Casual Arabic:
```
رح يكون مرح كتير
```

In the formal Arabic translation, the expression "سيكون" (will be) and the use of the adverb "جدًا" (very) make the sentence formal. In the casual Arabic translation, the use of the colloquial expression "رح" (going to) and the informal adjective "كتير" (a lot) make the sentence casual.