副词
1. 突然地;出乎意料地
If something happens suddenly, it happens quickly and unexpectedly.
1. quickly and without warning
e.g. he stopped suddenly
2. happening unexpectedly
e.g. suddenly she felt a sharp pain in her side
Synonym: all of a suddenof a sudden
3. on impulse
without premeditation
e.g. he decided to go to Chicago on the spur of the moment
he made up his mind suddenly
Synonym: on the spur of the moment