Usages of yìxiē
天气 很 冷， 你 最好 多 穿 一些 衣服。tiānqì hěn lěng, nǐ zuìhǎo duō chuān yìxiē yīfu.
The weather is very cold; you’d better wear some more clothes.
你 先 休息 一会儿， 我们 还 有 一些 时间， 然后 我们 继续 学习。nǐ xiān xiūxi yíhuìr, wǒmen hái yǒu yìxiē shíjiān, ránhòu wǒmen jìxù xuéxí.
Rest for a while first; we still have some time, then we’ll continue studying.
老师 让 我们 回家 读 一些 文章， 然后 在 课上 自由 讨论。lǎoshī ràng wǒmen huíjiā dú yìxiē wénzhāng, ránhòu zài kèshàng zìyóu tǎolùn.
The teacher asked us to go home and read some articles, then freely discuss them in class.
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We have an entire course teaching Chinese grammar and vocabulary.