Correct

三天两头

/ sān tiān liǎng tóu /
Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/三天两头-Chinese-idioms-Cchatty-544ad148-09aa-45c8-b428-b4c99cf0925c-1612776155.jpg

Collocation

1
三天两头……
2
三天两头地……

Definition

三天两头

Literally means:

every two or three days

Actually means:

It means every other day. It figuratively means things happen frequently.

隔一天或两天,形容事情经常或时常发生。

Example

Used as adverbial adiunet djunct. (作状语)
1
zǒngshì
总是
sāntiānliǎngtóu
三天两头
lái
wèn
jiè
qián
  
,
jiè
le
yòu
hái
  
,
xiànzài
现在
kàndào
看到
jiù
xiǎng
duǒkāi
躲开
  

She always asked me twice in three days to borrow money, borrowed it and didn't pay it back, and now I want to avoid it when I see her.

2
men
你们
zěnme
怎么
sāntiānliǎngtóu
三天两头
chǎojià
吵架
ā
  
?
Yǒu
shénme
什么
shìqing
事情
hǎohǎo
好好
shāngliang
商量
ma
  
,
yào
不要
zǒngshì
总是
chǎojià
吵架
  

Why are you fighting for three days? There's nothing to discuss, don't always quarrel.

3
sāntiānliǎngtóu
三天两头
táo
逃课
  
,
zěnme
怎么
néng
xué
de
hǎo
ne
  
!

How can you learn well when you skip classes at two ends in three days?

Related

三天两头