这孩子真乖，自己一个人在家写作业。
Zhè háizi zhēn guāi, zìjǐ yīgè rén zài jiā xiě zuòyè.
This child is really well-behaved; he does his homework at home by himself.
自己 zìjǐ – oneself
作业 zuòyè – homework
他从小就很乖巧懂事，从不让父母操心。
Tā cóngxiǎo jiù hěn guāiqiǎo dǒngshì, cóng bù ràng fùmǔ cāoxīn.
He has been well-behaved and sensible since he was a child, never making his parents worry.
乖巧 guāiqiǎo – clever and well-behaved
懂事 dǒngshì – sensible
操心 cāoxīn – to worry
他学习非常刻苦，经常熬夜看书。
Tā xuéxí fēicháng kèkǔ, jīngcháng áoyè kànshū.
He studies very hard and often stays up late to read.
熬夜 áoyè – to stay up late
刻苦努力是取得成功的必经之路。
Kèkǔ nǔlì shì qǔdé chénggōng de bìjīng zhī lù.
Hard work and effort are the necessary path to success.
努力 nǔlì – to strive
取得 qǔdé – to achieve
成功 chénggōng – success
必经之路 bìjīng zhī lù – necessary path
无论做什么事，我们都应该遵守规则和纪律。
Wúlùn zuò shénme shì, wǒmen dōu yīnggāi zūnshǒu guīzé hé jìlǜ.
No matter what we do, we should abide by the rules and discipline.
规则 guīzé – rule
纪律 jìlǜ – discipline
遵守交通规则，可以保障我们的人身安全。
Zūnshǒu jiāotōng guīzé, kěyǐ bǎozhàng wǒmen de rénshēn ānquán.
Abiding by traffic rules can ensure our personal safety.
交通 jiāotōng – traffic
保障 bǎozhàng – to guarantee
人身安全 rénshēn ānquán – personal safety
班长负责维持班级的纪律，让大家有一个好的学习环境。
Bānzhǎng fùzé wéichí bānjí de jìlǜ, ràng dàjiā yǒu yīgè hǎo de xuéxí huánjìng.
The class monitor is responsible for maintaining class discipline to provide a good learning environment for everyone.
班长 bānzhǎng – class monitor
维持 wéichí – to maintain
环境 huánjìng – environment
他因严重违反纪律，受到了学校的处分。
Tā yīn yánzhòng wéifǎn jìlǜ, shòudàole xuéxiào de chǔfèn.
He was punished by the school for seriously violating discipline.
严重 yánzhòng – serious
违反 wéifǎn – to violate
处分 chǔfèn – punishment