他看起来很斯文，说话也很有礼貌。

Tā kànqǐlái hěn sīwen, shuōhuà yě hěn yǒu lǐmào.

He looks very gentle and speaks politely as well.

她穿着简单的连衣裙，看上去既干净又斯文。

Tā chuān zhe jiǎndān de liányīqún, kàn shàngqù jì gānjìng yòu sīwen.

She is wearing a simple dress and looks both neat and demure.

他平时一副斯文样子，生气时却会突然发火。

Tā píngshí yí fù sīwen yàngzi, shēngqì shí què huì tūrán fāhuǒ.

He usually looks very gentle, but when angry he can suddenly lose his temper.