你还记得第一次坐飞机是什么感觉吗？

Nǐ hái jìde dì yī cì zuò fēijī shì shénme gǎnjué ma?

Do you still remember what it felt like the first time you flew on a plane?

第一次自己做饭，她差点把厨房烧了。

Dì yī cì zìjǐ zuòfàn, tā chàdiǎn bǎ chúfáng shāo le.

The first time she cooked by herself, she nearly set the kitchen on fire.

这是我第一次来北京，一切都很新鲜。

Zhè shì wǒ dì yī cì lái Běijīng, yīqiè dōu hěn xīnxiān.

This is my first time in Beijing; everything feels so new.