系動詞后的表人稱,地位,職業(yè),狀態(tài)等的成分可以視為表語.
He is (a student).
The glass is (broken).
What he did is (what he said).注：系動詞不是只有be動詞.
定語是修飾名詞或代詞用的,單個單詞作定語前置,短語或句子作定語要后置.
China is a (developing) country.
I have nothing (to do) now.
The teacher (who/that teaches us English) is called Mr.Lee.
狀語是用來修飾形容詞,副詞,動詞或整個句子用的,通常是副詞來充當,也可以是一個短語或句子.
(Luckily),he passed the final exam.
He (usually) stays up.