樓主好,

條件虛擬從句之所以可以省略主語和be,是因?yàn)闂l件從句中的主語和主句的主語是一致的,即表示同一個(gè)人的時(shí)候,那么這時(shí)候是可以省略的.

還原就是: If the girl was invited, she would very much like to sing a song at the evening party.

舉個(gè)例子,If hired by the new company,Jack would move to another city. 就等于 If Jack was hired by the new company, he would move to another city.

前后主語一致, 從句的主語就可以省

希望對(duì)你有幫助^^謝謝你，看了你的回復(fù)我明白了。是只有條件狀語從句的主語和主句中的主語一致可以省略主語和BE 嗎？其他情況可以省略嗎？狀語從句也可以依照這個(gè)來省略, When finishing the homework, I will go to the zoo. 就等于, when I finishing the homework, I will go to the zoo, 從句和主句主語一致,都是I, 那么從句就可以省略主語.你舉得例子只能省略主語嗎？那什么情況下像我提出的問題那樣可以省略主語和謂語呢？一個(gè)完整句子什么成份都可以少,謂語,記住謂語是不能少的.你那個(gè)例子謂語不在嗎? invited,只是BE動(dòng)詞給省了.