Usages of wèi
她 说， 这 次 成功 让 她 更 有 信心 为 自己 的 理想 努力。Tā shuō, zhè cì chénggōng ràng tā gèng yǒu xìnxīn wèi zìjǐ de lǐxiǎng nǔlì.
She said that this success makes her more confident to work hard for her ideals.
妈妈 为 我 担心。māma wèi wǒ dānxīn.
My mom worries about me.
老师 说， 这 个 小组 的 每 个 人 都 要 为 自己 的 部分 负责。Lǎoshī shuō, zhè gè xiǎozǔ de měi gè rén dōu yào wèi zìjǐ de bùfen fùzé.
The teacher said that everyone in this group must be responsible for their own part.
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