Correct
未曾
/ wèicéng /
Strokes
Definition
hasn't (or haven't)/hasn't ever
Example
As an Adverb
not; did not; never
1
Shǔjià
暑假
qījiān
期间
,
wǒ
我
wèicéng
未曾
xiūxi
休息
guò
过
yī
一
tiān
天
。
I have not had even one day off for the whole summer vacation.
2
Wèicéng
未曾
kāifā
开发
de
的
zìránzīyuán
自然资源
undeveloped natural resources
3
Wèicéng
未曾
móumiàn
谋面
have never seen each other before