truthful和faithful的区别：中文意思不同、词性不同、用法不同。truthful只作形容词，意思为诚实的、讲真话，在句中充当定语或者表语；true可作形容词、副词和名词，含义有确实的、笔直地、准确等，在句中充当的成分比较多。

一、truthful的基本含义及用法介绍
truthful作为形容词，意为诚实;讲真话;坦率;真实的;如实的。
例句：They were less than truthful about their part in the crime.
他们对自己在这次犯罪中所起的作用讲的绝非实情。
She could not give him a truthful answer.
她不能给他一个诚实的答案。
Are you being completely truthful with me?
你跟我讲的全是真话吗？
We've all learnt to be fairly truthful about our personal lives
我们都学会了要非常坦诚地对待自己的个人生活。
Most religions teach you to be truthful and self-disciplined.
多数宗教教导人们要真诚和律己。
二、faithful的基本含义及用法介绍
1、作为形容词，意为符合事实的;确实的;如实的;实质的，真正的(而非表面上的);名副其实的;真正的。
例句：All the rumours turned out to be true.
所有的传闻结果都确有其事。
The music is dull and uninspiring, and the same is true of the acting.
音乐沉闷枯燥毫不动人，表演也是。
He reveals his true character to very few people.
他没有向什么人显露过他的真实性格。
2、作为副词，意为笔直地;不偏不斜地;直言相告;实话实说。
例句：The arrow flew straight and true to the target.
箭不偏不斜地朝靶子飞去。
He had spoken truer than he knew.
他说得比他知道的还确切。
3、作为名词，意为真实;准确。
例句：Study after study has shown this to be true.
多项研究证明这个结论真实准确。
