大家好，我是小前，我来为大家解答以上问题。主语补足语和定语怎么区分，主语补足语很多人还不知道，现在让我们一起来看看吧！

一. 主语补足语即被动语态中的宾语补足语。

eg.They caught boy stealing.

被动语态 The boy was caught stealing.

stealing 即为主语补足语

被动语态后的主语补足语

二.主语补足语的判别

1.看句中的动词是不是可接复合宾语，而且是不是被动语态，与此同时还要看其后部分的逻辑主语是不是句子的主语。

2. 另一种最简单的方法是：如果还不能看出来就可以把全句改成主动语态，加上一个主语we或people等。改成主动语态后，看后面是不是变成了“宾语+宾语补足语”了，这样我们就可以判别原句后面是不是主语补足语。

e.g.被动句：She was found reading in the library. (主语补足语) 主动句：We found her reading in the library. (宾语+宾语补足语)

三.主语补足语形式种种

1. 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. ③ He was found the right man for the job.

2. 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. ③ The classroom is always kept clean every day.

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 He is often heard reading English. ② The professor was seen making an experiment in the chemistry lab. ③ The glass was found broken. ④ The classroom was found crowded with people.

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. ③ The spy was ordered to be hanged.

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. ③ English is considered of great importance for us.

6. as后面接名词、形容词、分词等用作主语补足语。例如： ① English is taken as a useful means for research work. ② The news is considered as true. ③ The stool is usually thought as having four legs ④ The vase is thought as broken.

7. 由what引导的名词性从句用作主语补足语。例如： The boy has been made what he is.

本文到此讲解完毕了，希望对大家有帮助。