Word不是。。。就是。。。...búshì...jiùshìMeaningeither ... orPart of speechconjunctionPronunciationCourseHardcore ChineseLessonLesson 26Usages of ...búshì...jiùshì春天chūntiān 的de 时候shíhou， 这个zhège 城市chéngshì 不bú 是shì 下雨xiàyǔ， 就jiù 是shì 刮风guāfēng， 所以suǒyǐ 我wǒ 常常chángcháng 带dài 伞sǎn 出门chūmén。chūntiān de shíhou, zhège chéngshì bú shì xiàyǔ, jiù shì guāfēng, suǒyǐ wǒ chángcháng dài sǎn chūmén.In spring, this city is either rainy or windy, so I often bring an umbrella when I go out.