懷疑

Get out of it!
別瞎說了
A: You can turn to David for help.
你可以找大衛幫忙。
B: Get out of it! He is the last one you can rely on.
別瞎說了！他是最不可信賴的人。

I don't have great belief in ads.
我不太相信廣告的宣傳。
A：The ad says one must do exercise with their equipment to keep healthy.
廣告說要想健康就得用他們的器材來鍛煉身體。
B: I don't have great belief in ads. What they really want is to get more money from you.
我不太相信廣告的宣傳，他們只想更多地賺你的錢。
ad= advertisement“廣告”

Never tell me!= Tell me another!= That story isn't good enough for me.
我才不信呢！

I don't buy your story.
我不相信你的鬼話。
A: I have won the scholarship.
我獲得了獎學金。
B：I don't buy your story.
我不相信你的鬼話。
scholarship n. 獎學金

I doubt.
我懷疑這件事。
A: He said he had seen the princess.
他說他見到公主了。
B：I doubt it.
我懷疑這件事。

So what?
那又怎么樣呢？
A: He said he would think about our plan this time．
他說他這次會考慮我們的計劃。
B: So what? He never likes others' ideas and he never has any ideas of his own.
那又怎么樣呢？別人的點子他從來不喜歡，他自己又想不出點子。
“So what?“表示不屑一顧，不在乎或懷疑對方所提出的問題。

His decision is doubtful.
他的決定值得懷疑。
There's some doubt as to his decision.
對他做出的決定有一點懷疑。
doubtful a. 令人懷疑的

I find it hard to believe.
我覺得很難相信。
I think it's incredible.
我認為那難以置信。
A: I'm going to travel around the world.
我要去環游世界。
B: I find it hard to believe.
我覺得很難相信。

Don't expect me to believe you．
別指望我會相信你。
Do you expect me to believe that?
你以為我會相信嗎？
expect v. 期望，（口）料想，認為

I'II believe it when I see it．
我要親眼見到才能相信。
A：We have found your lost dog.
我們找到了你丟失的小狗。
B: I'll believe it when I see if.
我要親眼見到才能相信。