比如：「be sceptical about something（對某事半信半疑）」；「remain sceptical（將信將疑）」。來通過下面的兩個例句，鞏固對「sceptical」 的用法...

be doubtful of的用法和樣例：. 例句. He was under suspicion of theft. 他被懷疑有偷竊行為。 I'm doubtful whether ... ...

根據Shorter Oxford English Dictionary 6，在幾百年前doubtful確有驚恐的意思，但這用法現在已屬過時。另外說到英語用法的解說，我們應盡量避免以偏 ... ...

"Doubtful" 的用法和例句 ... A: I am doubtful of his ability to pass the test. ... A: doubtful: 疑问, usua...

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"doubtful" 例句. The player was doubtful of the judge's call. It is doubtful that anyone can accura...