是主语补足语（主语补足语是补充说明主语的形态特征.）
He is tired and hungry.说明他（主语）饿和累
主语补足语是补充说明主语的形态特征.
例如The cat was found alive.那只被发现时还是活的,alive就是主语cat的补足语,说明这只猫还是活的.
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.例如：
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)
主语补足语
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
主语补足语 是对一句话的主语进行补充说明.
1.在主语的后面:
eg:Jessica,the best student of our class,won the game.句中the best student of our class是对Jessica的补充说明,让大家明白Jessica的身份.
2.主语前:
eg:Tired and sleepy,I went to bed.---Tired and sleepy为主补
3.谓语动词后:
eg:He died young.--- young为主补
状语：英语中,修饰动词、形容词、副词等的句子成分叫状语
1.副词一般在句子中做状语．
He speaks English very well.他英语说得非常好.
2.不定式在句子中可以作目的状语.
I come specially to see you.我专门来看你.
3.介词短语
Ten years ago,She began to live in Dalian.
4.从句作状语
When she was 12 years old,she began to live in Dalian
5.分词作状语
Having had a quarrel with his wife,he left home in a bad tempe