Correct
前脚后脚
/ qián jiǎo hòu jiǎo /
Strokes
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Collocation
1
……几乎前脚后脚一齐到
2
前脚扫干净，后脚又搞脏了
3
一个前脚刚走，一个后脚就到
Definition
前脚后脚
Literally means:
front foot and rear foot
Actually means:
almost simultaneously
There is only a short time difference between two acts or two events.
两个动作或两件事情的时间很接近。
Example
Used as adverbial adjunction Qian Jiao (one's foot in the front) and Hou Jiao (one's foot behind) can be separated and collocated with different subjects. (作状语，“前脚”和“后脚”可拆开，分别和不同的主语搭配)
1
Nātiān
那天
,
nǐmen
你们
méiyǒu
没有
yāo
约
hǎo
好
,
nǐ
你
qiánjiǎo
前脚
gāng
刚
zǒu
走
,
tā
他
hòujiǎo
后脚
jiù
就
dào
到
liǎo
了
。
That day, you didn't make an appointment, your front foot just left, his back foot arrived.
2
Wǒ
我
yī
一
tiān
天
yào
要
sǎo
扫
hǎojǐcì
好几次
dì
地
。
Wǒ
我
qiánjiǎo
前脚
bǎ
把
dì
地
sǎo
扫
hǎo
好
le
了
,
tā
他
hòujiǎo
后脚
yòu
又
gǎo
搞
zāng
脏
le
了
,
zhè
这
yuànzi
院子
jiǎnzhí
简直
méiyǒu
没有
gānjìng
干净
de
的
shíhou
时候
。
I have to sweep the floor several times a day. My front foot swept the floor, his back foot was dirty again, the yard was simply not clean.
3
Zuìjìn
最近
zhège
这个
dìōu
地区
qìhòu
气候
yīzhí
一直
bùhǎo
不好
,
táifēng
台风
qiánjiǎo
前脚
zǒu
走
,
gāowēn
高温
hòujiǎo
后脚
dào
到
。
Recently the climate in this area has been bad, typhoon front foot away, high temperature back foot.