doubtful
adjective uk/ˈdaʊt.fəl/ us/ˈdaʊt.fəl/
B2 怀疑的，有疑虑的；不能确定的
If you are doubtful about something, you are uncertain about it.
The teacher is doubtful about having parents working as classroom assistants. 这位老师对由家长担任课堂助教一事拿不定主意。
B2 不大可能的
If a situation is doubtful, it is unlikely to happen or to be successful.
It is doubtful whether/if they ever reached the summit before they died. 他们死前不太可能到过山顶。
It was doubtful that the money would ever be found again. 再找到那些钱不太可能了。
- More examples
- It is doubtful whether the government will ever agree to their demands.
- We were doubtful about the product's usefulness from the start.
- It now looks doubtful that the building work will be completed on time.
- I'm a bit doubtful about whether to take on the job, as the hours are pretty unsociable.
- Many of us are doubtful about the value of these new educational strategies.