subject問題

Please note that the models to be exhibited are Japanese cartoon figures.

在句中為何the models to be exhibited 是subject,這是英文中的甚麼文法?
In English grammar, nouns can be single words or groups of words i.e. noun phrases.
"the models to be exhibited" is a noun phrase in which the noun is "the models" qualified by "to be exhibited". This noun phrase is also the subject of the clause " the models to be exhibited are Japanese cartoon figures."

有無一些方法使我可以下一次一見到某些句子就可以即刻知道是subject的方法嗎?
The simple way is to find out the verb first. Then the noun(s) or pronoun(s) which is(are) effecting the action represented by the verb is the subject.

2010-01-02 06:46:55 補充：
Thank 波波 for adding useful and correct tips to the answer.

"that" is followed by a complete sentence, where you would find Subj+V+Obj.
So the word "that" effectively serves as a clue to figuring out the noun (phrase).