动词 elect, call, name, make, find, leave 等后面常接名词用作主语补足语。
例如：
① The dog is called Karl.
② Coal is sometimes called stored-up sunlight.动词 keep, make, paint, cut, burn, beat, wash, find, consider, wipe 等后面常接形容词用作主语补足语。
例如：
① The door was painted white.
② The old man was found weak.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 He is often heard reading English.
② The professor was seen making an experiment in the chemistry lab.
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 to come upstairs.
② Ice is known to be in a solid state.
5.介词短语用作主语补足语。
例如：
① The books in the study must be kept in good order.
② He was found in good health.
以上是几种常见的主语补足语
至于宾语补足语：
例如：They found her happy. 在这句话中 her 是宾语，happy 是 her 的补足语。宾语一般直接跟在动词之后。
所以区分主语补足语和宾语补足语，主要是看修饰的是主语还是宾语。
