HSK V7-9
Correct

碰巧

/ pèngqiǎo / 
Strokes

Definition

by chance/by coincidence/to happen to

Example

As an Adverb
accidentally; by chance/coincidence/accident; as luck would have it; as it happens; coincidentally
1
Zhēn
真
pèngqiǎo
碰巧
  
!

What a (happy) coincidence!

2
Wǒ
我
zhèngyào
正要
zhǎo
找
nǐ
你
  
,
pèngqiǎo
碰巧
nǐ
你
lái
来
le
了
  
。

I just want to see you, and by coincidence you came.

3
Tāliǎ
他俩
pèngqiǎo
碰巧
tóngshí
同时
dàodá
到达
  
。

By chance they both arrived at the same time. / They happened to arrive at the same time.

4
Shìfà
事发
shí
时
tā
他
pèngqiǎo
碰巧
zài
在
xiànchǎng
现场
  
。

It just so happened that he was there when the accident took place. / He happened to be there when the accident took place.