Noun clauses as the subject什么是主语 什么是主语 主语: 主语: 句子说明的人或事物 句子说明的人或事物 , , 一般 一般 位于 位于 _ _ 。 。 句首 句首 I like English. The train left.Jane is good at playing the piano. Jane is good at playing the piano. To see is to believe. To see is to believe. Smoking is bad for health. Smoking is bad for health. What he has said is true. What he has said is true. 找出主语 找出主语 (名词 ) (不定式) (动 名词 ) (从句) 主语从句 主语从句 (Subject (Subject Clause) Clause) 在句子中充当主语的就是 在句子中充当主语的就是 主语从句 主语从句 。 。他通过了考试让老师很高兴。 他通过了考试让老师很高兴。 He passe