1)有些形容词(包括已变为形容词的分词)可以接不定式。
【例如】
I am eager to see him and tell him the truth. I am sure to pass the exam because I have made very good preparation.
这样用的形容词多是表示感情的。如:content(满意的),afraid(害怕的),anxious(渴望的),lucky(幸运的),careful(小心的),inclined(有意的),willing(情愿的),sorry(难过的),eager(热切的),sure(肯定的),determined(有决心的),foolish(愚蠢的),anxious(焦急的)等。这种句型有时为了突出形容词,还可以改为以it作形式主语的句子。
【例如】
It was wise of you to accept his advice. It was stupid of her to make such a mistake. It was unwise of me to have believed him.
2)在有些形容词后面可以跟一个that引导的从句。能这样使用的形容词如:certain(确定的),aware (知道的),sure (肯定的),confident (确信的),sorry (遗憾的),conscious (察觉的),afraid (担心的),delighted (愉快的),surprised (惊奇的),disappointed (失望的)等。
【例如】
I am aware that I must begin now if I want to pass the test.They were disappointed that you didn't show up at yesterday's party. I am sorry that the Chinese soccer team was defeated again.