为 wèi because offorto Example sentences 请让我为你拍照。 qǐng ràng wǒ wèi nǐ pāizhào. Please let me take your picture 他为我写了一首歌。 tā wèi wǒ xiě le yī shǒu gē. He wrote a song for me 老师、警察、医生都是为大家服务的工作。 lǎoshī, jǐngchá, yīshēng dōu shì wèi dàjiā fúwù de gōngzuò. Teachers, police officers, and doctors are jobs that offer service to the people 爸爸为弟弟盖了一间树屋。 bàba wèi dìdi gàile yī jiàn shù wū. Dad built a treehouse for my little brother