（1）不定式短语引起的感叹句不定式短语单独使用常表示惊异、气愤、祝愿等情绪。       To sell such a cheap suit as that to a millionaire! 竟然把这样一套衣服卖给一位百万富翁！       To think that I shall never see her again!真没想到我再也见不到她了！       To think of my leaving the umbrella in the train! 真没想到我把伞落到火车上了！（2）so和such引起的感叹句       The little boy is so clever!这个男孩真聪明！       It was such terrible writing!写得真糟糕！（3）That引起的感叹句       That引起的感叹句,表示愿望、遗憾。       That it should ever come to this!事情竟会弄到这种地步！       That she were here!她在这该多好！（4）if 或if only 引起的感叹句       If I haven't lost my watch!我的表要是不丢该多好!       If only I knew!要是我知道该多好。