They are boys。 例子如下I YOU He she we they it 是人称代词的主格，it 和you 既可以放在最前面. It is an apple，又可以放在动词或者介词后面。her还可以作形容词性代词。 it me you him her us them 是人称代词的宾格，一般放在动词或者介词的后面，一般放在名词前面. He is a boy：I am a boy. Give the book to him. You are a boy. She is a girl. We are boys. Look at me . This is her book. Let us go home. Take them to the classroom. 希望能够帮到你，一般作主语，放在句子的最前面
