HSK 5 HSK V6
Correct

至于

/ zhìyú / 
Strokes

Definition

as for/as to/to go so far as to

Example

As a Verb

go so far as to

1
Tā
他
kěnéng
可能
wǎn
晚
lái
来
yīhuìr  
一会儿
  
,
dàn
但
bùzhìyú
不至于
bù
不
lái
来
  
。

He may be a bit late, but I don't think he will go so far as to stay away.

As a Preposition

as for; as to

2
Tā
她
quèshí
确实
bìng
病
le
了
  
。
Zhìyú
至于
tā
她
shénme
什么
shíhou
时候
néng
能
lái
来
  
,
wǒ
我
shuō
说
bùzhǔn
不准
  
。

It's true that she is ill, but I am not sure when she will be able to come.