脱口说英语口语交际习语大全

T-14：to the backbone 彻底

A:Nancy is going out with David.
A:南希正和大卫交往。

B:I hope not. David is a liar to the backbone.
B：我可不希望这样，大卫是个十足的骗子。

A:How come?
A:何以见得？

B:He never tells anything true.
B：他从来就没讲过真话。