HSK V5
Correct

大事

/ dàshì / 
Strokes

Definition

major event/major political event (war or change of regime)/major social event (wedding or funeral)/(do sth) in a big way

Example

As a Noun
matter of great importance; matter/issue of substance; major undertaking; big/important event; major issue
1
Wù
误
dàshì
大事

botch up a matter of substance

2
Chéngjiù
成就
dàshì
大事

accomplish great deeds

As an Adverb
energetically; in a big way
3
Dàshì
大事
xuànrǎn
渲染

play up; exaggerate enormously