paired conjunctions: 要么 yàome…要么 yàome…, 不是 bùshì… jiùshì . . .
今晚我要么去图书馆看书,要么去实验室做实验。
Jīn wǎn wǒ yào me qù tú shū guǎn kàn shū,yào me qù shí yàn shì zuò shí yàn。
This evening I’ll either be going to the library to do some reading or going to the laboratory to do some experiments.
在海边度假的时候,我们每天不是吃鱼,就是吃蟹。
Zài hǎi biān dù jiǎ de shí hòu,wǒ men měi tiān bú shì chī yú,jiù shì chī xiè。
When we were spending our holiday by the sea, we ate either fish or crabs every day.
(lit. . . . if we didn’t eat fish, then (we) ate crab)
[1] Yip, P. C., Rimmington, D., Xiaoming, Z., & Henson, R. (2009). Basic Chinese: a grammar and workbook. Taylor & Francis.