3 sentences

1. 我从没发觉你的眼睛有多美。

   wǒ cóng méi fā​jué nǐ de yǎn​jing yǒu duō měi.

   I never realized how beautiful your eyes were.

   Source: OpenSubtitles

2. 他过了很久才发觉自己上当了。

   tā guò le hěn jiǔ cái fā​jué zì​jǐ shàng​dàng le.

   It took him a long time to realize he had been deceived.

   Source: Dong Chinese Dictionary

3. 敏锐的猎人发觉了草丛中的动静。

   mǐn​ruì de liè​rén fā​jué le cǎo​cóng zhōng de dòng​jìng.

   The keen hunter noticed movement in the grass.

   Source: Dong Chinese Dictionary