9 sentences

1. 一年有四时：春、夏、秋、冬。

   yī nián yǒu sì shí: chūn, xià, qiū, dōng.

   A year has four seasons: spring, summer, autumn, and winter.

   Source: Dong Chinese Dictionary

2. 春去秋来，又是岁末时节。

   chūn qù qiū lái, yòu shì suì​mò shí​jié.

   Spring goes and autumn comes; it is the end of the year once again.

   Source: Dong Chinese Dictionary

3. 一年有四个季节：春、夏、秋、冬。

   yī nián yǒu sì gè jì​jié: chūn, xià, qiū, dōng.

   There are four seasons in a year: spring, summer, autumn, and winter.

   Source: Dong Chinese Dictionary

4. 秋天到了，树叶开始变黄了。

   qiū tiān dào le, shù​yè kāi​shǐ biàn huáng le.

   Autumn has arrived, and the leaves are starting to turn yellow.

   Source: Dong Chinese Dictionary

5. 这种花只在夏、秋两个季节开放。

   zhè zhǒng huā zhǐ zài xià, qiū liǎng gè jì​jié kāi​fàng.

   This flower only blooms during the summer and autumn seasons.

   Source: Dong Chinese Dictionary

6. 春夏秋冬的轮回是不可抗拒的自然规律。

   chūn xià qiū dōng de lún​huí shì bù kě kàng​jù de zì​rán guī​lǜ.

   The cycle of the four seasons is an irresistible law of nature.

   Source: Dong Chinese Dictionary

7. 今年庄稼长势很好，会有一个大丰秋。

   jīn​nián zhuāng​jia zhǎng​shì hěn hǎo, huì yǒu yī gè dà fēng qiū.

   The crops are growing well this year, so there will be a bountiful autumn harvest.

   Source: Dong Chinese Dictionary

8. 那个小女孩正开心地在院子里荡秋千。

   nà gè xiǎo nǚ​hái zhèng kāi​xīn de zài yuàn​zi lǐ dàng qiū qiān.

   That little girl is happily playing on a swing in the yard.

   Source: Dong Chinese Dictionary

9. 秋先生刚才发信息说，他已经到公司门口了。

   Qiū xiān​sheng gāng​cái fā xìn​xī shuō, tā yǐ​jīng dào gōng​sī mén​kǒu le.

   Mr. Qiu just messaged to say he has arrived at the company entrance.

   Source: Dong Chinese Dictionary