HSK C2/W2/V7-9
Correct

故

/ gù / 
Strokes

Definition

happening/instance/reason/cause/intentional/former/old/friend/therefore/hence/(of people) to die, dead

Example

As a Noun

cause; reason

1
Fēi
非
tā
他
gù
故
  
。

There are no other reasons.

As a Conjunction

hence; therefore; so; as a result

2
Wǒ
我
sī
思
gù
故
wǒ
我
zài
在
  
。

I think. Therefore I am.

3
Jìnrì
近日
tūfā
突发
jíbìng
疾病
  
,
gù
故
wèinéng
未能
rúqī
如期
fǎnhuí
返回
  
。

Having caught a sudden illness, I was not able to get back on time.

As a Noun

incident; happening; accident; event

As an Adverb

intentionally; deliberately; on purpose