參考答案：
不一定.一般情況下,be 動(dòng)詞后接形容詞、名詞、介詞短語、名詞性從句時(shí),這些都是表語.例如：
He is tall.
He is a student.
He is in Class Two.
The question is when he can arrive at the hotel.
但是,be 動(dòng)詞還可構(gòu)成各種時(shí)態(tài),此時(shí),be 只是一個(gè)助動(dòng)詞了,后面的部分不是表語.例如：
He is studying English.
He was struck in the leg by a bullet.