弟弟的英文：
younger brother
brother

参考例句：

He is the stepbrother of Jay.
他是杰伊同父异母的弟弟。

How is your brother coming on with his study of English?
你弟弟的英语学习得怎么样了？

My little brother is playing on the village green.
我弟弟在村中心的草地上玩。

Hello! are you Tim's brother David?
你好!你是蒂姆的弟弟大卫吗?

My brother is poor at arithmetic.
我弟弟的算术很差。

She mailed her brother two books.
她给弟弟邮了两本书。

He loved his brother deeply.
他深爱自己的弟弟。

She grew fondly attached to her young brother.
她深爱她的弟弟。

My brother is a six-footer
我的弟弟身高六英尺。

Bob's younger brother was a bad actor.
鲍勃的弟弟表现恶劣。

younger是什么意思：
[ young ]的形容词比较级

The girl in red is his younger sister.
那个穿红衣服的女孩是他妹妹。

Anne's not getting any younger.
安妮一点没有变年轻。

The younger mechanic readily fixed the car.
年轻的机修工很快地把车修好了。

He may be supplanted by a younger man.
他可能会被一个年龄比他小的人取代。

Let me direct these remarks to the younger students.
这些话还是让我来对低年级的学生说吧。

brother是什么意思：
n. 兄弟；教友；同事；战友；同胞
int. 我的老兄

He has scrap with his brother.
他与他的哥哥打架。

My brother is a football maniac.
我哥哥是个足球迷。

My brother and she are engaged.
我兄弟和她订婚了。

My brother has chronic bronchitis.
我的哥哥患有慢性支气管炎。

Her brother was an accomplished linguist.
她的哥哥能熟练地说好几种语言。