弟弟

nǐ bù bì tīng nǐ dì di hú shuō

你不必听你弟弟胡说。

You mustn't listen to what your younger brother says.

wǒ dì di zhèng zài dú dà xué sān nián jí míng nián bì yè

我弟弟正在读大学三年级，明年毕业。

My younger brother is in his junior year of college and will graduate next year.

wǒ dì di xiàn zài shì xué shēng

我弟弟现在是学生。

My younger brother is a student now.