我会更加努力，争气做到最好。
wǒ huì gèngjiā nǔlì ， zhēngqì zuòdào zuìhǎo 。
I will work harder and strive to do my best.
他为了家人而争气，不想让他们失望。
tā wèile jiārén ér zhēngqì ， bùxiǎng ràng tāmen shīwàng 。
He works hard for his family and doesn't want to let them down.
你要争气，不要放弃你的梦想。
nǐyào zhēngqì ， búyào fàngqì nǐde mèngxiǎng 。
You must work hard and not give up on your dreams.