it's a little sugary. sugary做表语可以吗？

形容词作表语或定语还与词义有关。例如ill作“生病的”讲,一般作表语。我们说:The man was ill. 我们不说:*the ill man?鸦 ill作“有害的、坏的”讲又只作定语。我们说:The war had many ill consequences.(战争造成了很多恶劣后果);我们不说:*The war consequence was ill. 又例:“His wife was late.” 是“他的妻子迟到了。”,而his late wife 则是“他的已故妻子”。
容词作定语是在名词前，在an interesting book,beautiful life中interesting和beautiful都是定语，作表语时则是在系动词后，系动词有be,taste,smell等等，be+adj例如be happy,taste delicious
我对语法了解太少了，帮你找点资料不知有用没？