The exam to be held tomorrow,是动词不定式的独立主格结构
表示 一次性动作 将要发生
这与分词的独立主格结构 用法 和意思 不一样
不定式“独立主格结构”
在“逻辑主语+动词不定式”结构中,动词不定式和它前面的名词或代词存在着逻辑上的主谓关系.这种结构也可用一个从句或并列分句来表达.
1．动词不定式用主动的形式
在独立主格结构中,动词不定式和它前面的名词或代词存在着逻辑上的主谓关系.
His mother to come tonight,he is busy preparing the dinner.他母亲今晚要来,他正在忙着准备饭菜.（= As his mother is to come tonight,he is busy preparing the dinner.）
——will you go to the comcert tonight 你今晚去听音乐会吗?
——sorry.So many exerise-books to check,I rially can't afford any time.对不起,有这多的作业要批,我真的抽不出时间.（＝Because I shall check so many exercise-books tonight,I really can't afford any time.）
The four of us agreed on a division of labour,each to translate a quarter of the book.我们四人同意分工干,每人翻译全书的四分之一.（＝The four of us agreed on a division of labour and each is to translate a quarter of the book.）
Many trees,flowers,and grass to be planted,our newly-built school will look even more beautiful.种上许多的树,花和草后,我们新建的学校将看上去更美.(=If many trees,flowers,and grass are planted,our newly-built school will look even more beautiful.)