HSK V7-9
Correct

回首

/ huíshǒu / 
Strokes

Definition

to turn around/to look back/to recollect

Example

As a Verb
turn one's head; turn round
1
Wǒ
我
juéde
觉得
yǒurén
有人
gēnzhāo
跟着
wǒ
我
  
,
kě
可
dāng
当
wǒ
我
huíshǒu
回首
shí
时
  
,
lián
连
gè
个
rényǐng
人影
dōu
都
méiyǒu
没有
  
。

I thought someone was tailing me, but when I turned round I saw not a soul.

As a Verb
look back; recollect; call to mind
2
Wǎngshì
往事
bùkānhuíshǒu
不堪回首

cannot bear to think of the past