7 sentences

1. 他走得很急，一转眼就不见了。

   tā zǒu de hěn jí, yī zhuǎn​yǎn jiù bù jiàn le.

   He left in a great hurry and was gone in an instant.

   Source: Dong Chinese Dictionary

2. 时间过得真快，转眼就是一年。

   shí​jiān guò de zhēn kuài, zhuǎn​yǎn jiù shì yī nián.

   Time flies; a year has passed in the blink of an eye.

   Source: Dong Chinese Dictionary

3. 他方才还在这里，怎么一转眼就不见了？

   tā fāng​cái hái zài zhè​lǐ, zěn​me yī zhuǎn​yǎn jiù bù jiàn le?

   He was just here a moment ago; how did he disappear so quickly?

   Source: Dong Chinese Dictionary

4. 时间飞逝，转眼间我们已经毕业十年了。

   shí​jiān fēi​shì, zhuǎn​yǎn jiān wǒ​men yǐ​jīng bì​yè shí nián le.

   Time flies; it's already been ten years since we graduated.

   Source: Dong Chinese Dictionary

5. 我的钥匙刚才还在桌上，怎么一转眼就不见了？

   wǒ de yào​shi gāng​cái hái zài zhuō shàng, zěn​me yī zhuǎn​yǎn jiù bù​jiàn le?

   My keys were on the table just a moment ago; how did they disappear in the blink of an eye?

   Source: Dong Chinese Dictionary

6. 我这人没心没肺的，刚才还拿着钥匙，转眼就找不到了。

   wǒ zhè rén méi​xīn​méi​fèi de, gāng​cái hái ná zhe yào​shi, zhuǎn​yǎn jiù zhǎo bù dào le.

   I'm so scatterbrained; I was holding my keys just a moment ago and now I can't find them.

   Source: Dong Chinese Dictionary

7. 他转眼望向别处，不敢看我。

   tā zhuǎn​yǎn wàng xiàng bié​chù, bù gǎn kàn wǒ.

   He looked away, not daring to meet my eyes.

   Source: Dong Chinese Dictionary