这样的系动词有continue, remain, stay, keep, hold, rest和prove等。请看例句： 20　He has fallen into the habit of doing morning exercises to stay healthy. 妙语点睛　不要说stay healthily，因为副词不能作表语。 精品译文　为了保持健康，他已经养成了晨练的习惯。
　　If you don't stay busy, you die. I don't want to die right now. 妙语点睛　不要说stay busily，因为副词不能作表语。 精品译文　如果你不辛勤忙碌，就等于死亡。我可不想现在就死去。 You may rest assured that he will come to the party. 妙语点睛　rest assured是一个固定搭配。 精品译文　尽管放心，他会来参加聚会的。 The weather continued fine for several days.天气连续几天都很晴朗。
　　He held silent for the whole day.他一整天都沉默不语。近似于不及物动词的系动词有sit, act, arrive, blush, marry, die和be born等。有人将其称为“半系动词”，因为它们介于不及物动词和系动词之间。读者对这些系动词只需了解，并且在遇到相关句子时能够正确理解即可。 我们先来看下面这篇介绍阿诺德·施瓦辛格的短文：Arnold Schwarzenegger grew up in Australia. His father was a policeman and his mother a housewife. Home didn't have a flush toilet or refrigerator until Arnie was 14. He arrived in the U. S. a penniless 21-year-old. His wife, Maria Shiver, is an anchor woman on U. S. TV news and niece of assassinated President John F. Kennedy. Andy Warhol and Grace Jones were among the 500 guests at their wedding. Others invited who were unable to attend included the Pope and the Reagans. His hobbies include reading, collecting art and attending classical music festivals. 我们来分析其中的一句话：He arrived in the U. S. a penniless 21-year-old.
　　首先，介词短语in the U. S.显然是表示地点的，修饰谓语arrived，即是一个地点状语，表示“他到达了美国”。其次，名词短语a penniless 21-year-old起什么作用呢?作arrived的宾语吗?显然不行，因为arrive是不及物动词，不可能接宾语。从语义上来看，a penniless 21-year-old显然是补充说明主语he的，表示“他到达美国的时候是一个身无分文的21岁的穷小子”，即a penniless 21-year-old是一个主语补足语，也就是相当于表语。可以把这个句子改写成：He was a penniless 21-year-old when he arrived in the U. S.