She is fat.是一个陈述句，中文意思是：她很胖。

这个句子可以有很多种提问方式。如：

1. Is she fat （她胖吗？）2. She is fat，isn't she （她很胖，不是吗？）3. How is she （她怎么样？）4. Who is fat （谁很胖？）5. What is she like （她怎么样？）6. She isn't fat,is she （她不胖，是吗？）7. Is she fat or not （她胖不胖？）回答完毕。