Always peak the falsehood.
He is incapable of telling truth. What’s worse, he always peaks the falsehood.
2008-08-25 16:10:09 補充：
Sorry, I meant: "always peak a falsehood".
By the way, tell a falsehood = tell a lie 說謊
Myself. Went abroad at age 11. With 32 years experience speaking and writing English. Tutored English as an Undergrad. A project manager in the US since 1992.