HSK 6 HSK V7-9
Correct

成天

/ chéngtiān /
Strokes

Collocation

1
成天忙
2
成天不在家

Definition

成天 is an Adverb, which means [(coll.) all day long/all the time].

Example

As an Adverb.
1
chéngtiān
成天
máng
  
,
zhīdào
知道
máng
xiē
shénme
什么
  

He's busy all day and doesn't know what he's busy with.

2
chéngtiān
成天
jiùshì
就是
gōngzuò
工作
  
,
gōngzuò
工作
  
,
hěn
shǎo
yǒu
娱乐
de
shíjiān
时间
  

He was working all day, working, and had very little time for entertainment.

3
Zuìjìn
最近
  
,
gōngzuò
工作
hěn
máng
  
,
chéngtiān
成天
zàijiā
在家
  

Lately, he has been very busy at work and has been away from home all day.