5 sentences

1. 也许你早已知道了。

   yě​xǔ nǐ zǎo​yǐ zhī​dào le.

   Maybe you knew.

   Source: OpenSubtitles

2. 他早已知道了这个秘密。

   tā zǎo​yǐ zhī​dào le zhè​gè mì​mì.

   He had known the secret for a long time.

   Source: Dong Chinese Dictionary

3. 他对比自己大几岁的邻居早已暗暗钟情。

   tā duì bǐ zì​jǐ dà jǐ suì de lín​jū zǎo​yǐ àn'àn zhōng​qíng.

   He has long been secretly in love with his neighbor, who is a few years older than him.

   Source: Dong Chinese Dictionary

4. 这种老掉牙的理论早已被现代科学推翻了。

   zhè zhǒng lǎo​diào​yá de lǐ​lùn zǎo​yǐ bèi xiàn​dài kē​xué tuī​fān le.

   This obsolete theory has long been overturned by modern science.

   Source: Dong Chinese Dictionary

5. 他早已在老家当过老师，所以对教学很有经验。

   tā zǎo​yǐ zài lǎo​jiā dāng guo lǎo​shī, suǒ​yǐ duì jiào​xué hěn yǒu jīng​yàn.

   He had been a teacher in his hometown long ago, so he is very experienced in teaching.

   Source: Dong Chinese Dictionary