1、主语为单数可数名词：
This computer is yours.
That dress is red.
2、主语为不可数名词：
The soup is very hot.
The water is in the glass.
3、主语为三个人称代词：he, she, it
He likes playing computer.
She has lunch at home.
It looks a baby.
4、主语为两个指示代词：this, that
This is a eraser.
That is an apple.
5、主语为人名、地名、称呼：
Tianjin is in China.
Rose looks like her mother.
Mother often makes cakes.
三年级英语第三人称单数句型
He/She + 动词原形：他/她 + 动词原形
例如：She likes to play soccer.（她喜欢踢足球。）
He/She + 动词原形 + s/es：他/她 + 动词原形 + s/es
例如：He eats an apple every day.（他每天吃一个苹果。）
He/She + is + 形容词：他/她 + 是 + 形容词
例如：She is happy today.（她今天很开心。）
He/She + has + 名词：他/她 + 有 + 名词
例如：He has a pet dog.（他有一只宠物狗。）
He/She + can + 动词原形：他/她 + 能够 + 动词原形
例如：She can swim very well.（她游泳游得很好。）
这些句型可以帮助你描述第三人称单数的人或物的动作、状态、能力等。记住在第三人称单数句型中，动词要加上相应的变化，如加s、es或改变拼写
三年级英语第三人称单数句型
答实应该为:He is a student. He likes bananas.