ry important . (人们认为电很重要。) +形容词和形容词短语: + 1) Short of time , She could not join us in the work. (She, who was short of time, could not join us in the work. 她由于没有时间,不能参加我们的工作。) + 3. 动词 see, watch, hear, feel, listen to, look at, imagine 等后面接分词用作主语补足语。例如: +① The professor was seen making an experiment in the chemistry lab. +③ The classroom was found crowded with people . +分词短语: + Born in Scotland in1847 ,AlexanderBell became interested very early in the methods of munication. (Alexander Bell ,who was born in Scotland in 1847, became interested very early in the methods of munication. 亚历山大·贝尔于 1847 年出生在苏格兰,他从很小的时候,就对人类的通讯方法感兴趣。) + 4.感官动词 see, watch, hear, notice, feel, make 等后面接带 to的不定式用作主语补足语。例如: +① He was seen e upstairs . +② He was asked to examine the coil .(他被请去检查线圈。)