① 什麼詞可以做表語
在英語中，句子的表語通常都是由名詞、代詞、形容詞、副詞、數詞、介詞短語、分詞、不定式、動名詞或從句來充當。
② 什麼成分可以充當表語
(1) 說明主語的身份、性質、狀況等含義的成分,通常由形容詞、副詞、介詞短語、名詞、代詞等充當。如：He became a doctor after he left high school.(高中畢業他當上了醫生。) / The rubber wheels are over there.(橡膠輪子在那邊。) / He does not feel like eating anything today because he has caught a bad cold.(他今天不想吃任何東西因為他得了重感冒。) / Who is it?(誰呀？)
(2) 表語只能放在連系動詞(如：be,look,become,turn get,grow,feel,seem) 之後,對表語進行提問的句子除外。
(3) 代詞做表語一般用主格,口語中常用賓。如：It』s I. (It』s me.)是我。
(4) 只能作表語的形容詞有：sorry,afraid,alone,asleep,awake,ill,well,sure,interested等等。He was terribly sorry for his carelessness.(他很為他的粗心而歉疚。) / Please make no noise here; the baby is asleep.(請不要發出響動,嬰兒正熟睡呢。) / I am only interested in sitting in a boat and doing nothing at all!(我只是對獨坐孤舟無所事事感興趣。) / I am not alone in thinking so.(並非只有我才這樣想的。)
(5) 表語也可以由從句充當,詳見「表語從句」。