1. open：公開的，坦率的

Don’t hid secret of oneself, and willing to express oneself and expose the weakness.

例：

Lucy is open to her good friend, and never hid her true feelings.

露西對好朋友很坦率，從不隱藏她的真實(shí)情感。

He is not open enough to his parents.

對他的父母，他沒那么的坦率。

2. frank：坦白的，坦率的

Emphasizing speak freely and unreservedly, without any constraint.

例：

To be frank, I don’t like your friend Tom.

坦白的說，我不喜歡你的那個(gè)叫湯姆的朋友。

It is obvious that your client is not that frank with you.

很明顯你的委托人對你不夠坦率。

Frankly speaking, you love me not more than I love you.

坦白地說，你并沒有我愛你那樣地愛我。

3. sincere：真誠的，誠摯的

It focuses on that someone express a kind of inner sincerity for somebody or something.

例：

He begged your pardon with sincere desire.

他真心誠意地祈求你的原諒。

He is sincere in his words.

他的話很真摯。

We all long for sincere and eternal friendship.

我們都渴望真誠永恒的友誼。

4. honest：誠實(shí)的，坦率的

It refers to abide by the moral principles, such as integrity.

例：

I hope you are honest about what you did.

我希望你能對你的所作所為沒有一絲隱瞞。

People who are honest despise lies.

誠實(shí)的人蔑視謊言。

He is a really honest man.

他真的是一個(gè)誠實(shí)的人。

5. plain：坦率的，爽快的

It points that someone speaks his mind with no affectation and false.

例：

Could you be much plainer?

你就不能爽快點(diǎn)兒？

If you are plain to me, I will do so to you.

如果你對我坦率，我對你也會(huì)毫無隱瞞。

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