suspicious">suspicious / doubtful
Cats are suspicious">suspicious of human beings.
I am not sure about your ability to do so.
I am doubtful of your ability.
I am dubious about your ability.
questionable强调质疑,有问题的,值得争议的
This is a questionable conclusion / decision.
sceptical 怀疑论的,怀疑的 (正式用法)
suspicious
Your idea is sceptical.
dubious / dubious about ( of ) / doubtful / uncertain / suspicious / sceptical / questionable
◆privilege n. 特权
◆misery n. 苦难
◆acquaintance n. 熟人
◆treat n. 难得的乐事,享受
be one's treat
1.…请客 == sb. stand treat
Eg: Let's go to have dinner. It's my treat
treat sb. to
take sb. to dinner
Eg: It’s my pleasure to take you to dinner.
stand treat
I stand treat 我作东。
2. 对待
treat sb. as
I treat him as my best friend.
treat with sb. 跟某人商谈
I can’t bring it to a conclusion. I want to treat with you.
treat of sth. / sb. ==speak of
We speak / treat of tramps contemptuously.
2. 荣幸,享受
Eg: Having dinner with you is my treat.
treat sb. to 宴请某人…