他不只是胖, 他是过于肥胖！用英语怎么说？

他不只是胖, 他是过于肥胖！

He's not just fat.He's positively gross!

not

adv. 不，[用以表示否定、否认、拒绝、禁止等]不是，几乎不，未必，没有[用于否定后面的词或短语]；

例句
It became very clear that the incident was not just an aberration, it was not just a single incident.
事实已经很清楚，这件事不是偶发的，它并不是一起孤立的事件。

just

adv. 刚才，仅仅，只是，正好，刚要；adj. 公正的，合理的，恰当的，合法的，正确的；

例句
It became very clear that the incident was not just an aberration, it was not just a single incident.
事实已经很清楚，这件事不是偶发的，它并不是一起孤立的事件。

fat

adj. 肥的，胖的，厚的，大量的；n. 脂肪，肥肉，动植物油；vt. 养肥，在…中加入脂肪；vi. 长肥；

例句
It's made from natural ingredients, but with the added bonus of containing 30 per cent less fat than ordinary cheese.
该干酪用天然原料制成，而且其脂肪含量比普通干酪低30%。

positively

adv. 明确地，断然地，肯定地；

例句
The bathroom, with its ancient facilities, is positively arctic.
该浴室设备陈旧，肯定非常寒冷。

gross

adj. 总的，严重的，令人不快的，粗鲁的；n. 总收入，罗（一罗为144个）；vt. 总共收入为，总共赚得；adv. 总共，全部；

例句
Expenses are deductible only to the extent that in aggregate they exceed 7 percent of gross income.
只有在消费总额超过总收入的7%时才可免税。