After her best friend had lied three times, Alice was dubious of her story
The lady was very dubious of the children's allegations.
His mother was dubious that he had already cleaned his room.He lost the debate because his argument was made up of dubious "facts."
He gave a dubious explanation for his absence from the meeting, raising suspicions among his colleagues.
The plan to separate the world into nations was quite dubious. Definition is here: http://www.merriam-webster.com/dictionary/dubious
(dubious means of uncertain truth or validity)Examples :The validity of the document was somewhat dubious.I was rather dubious about the reasons he gave for his absence.
I think that dubious distinction could be awarded to consonants, 21 vowels to 30 consonants in that sentence.
He dubiously marked down the answer on his test.Dubiously is the adverb form of dubious. Dubious means doubtful and unsure. Just add an "ly" and it turns dubious into an adverb. An adverb simply describes a verb. Your verb in this sentence is "marked." "Dubiously describes how he "marked" his answer.
Dubious tense refers to a grammatical construction that is unclear or questionable in terms of its timing or certainty. It arises when the verb tense used in a sentence does not match with the timeframe or certainty of the action being described, making it difficult for the reader or listener to understand the intended meaning.
I was doubting that she was telling the truth^ In this answer doubting is used as a verb. The word doubting can be used as a verb (somehow informal because DOUBT is a stative verb). It can also be used as an adjective according to some dictionaries (although dubious would be the best word)It was a very doubting/dubious answer (an adjective)
Yes, dubious is an adjective > (Of questionable character: dubious profits.)
Now a comprehensive European blacklist of airlines with dubious safety standards will soon be in force across the EU.
I was dubious of driving with Jonny because he just recently got his license.