Correct

况且 vs 何况

/ kuàngqiě vs hékuàng /
Strokes

Definition

况且 and 何况 both are Conjunctions, which means [moreover; besides; let alone].

Example

何况 can introduce a phrase or a noun, pronoun, numeral, or measure word, but 况且 cannot. 何况 can also be used in a rhetorical question.
In examples ① and ②, the two words are interchangeable. Examples ③ and ④ are rhetorical questions, so only 何况 can be used.
1
Tiān
天气
hěn
hǎo
  
,
kuàngqiě
况且
  
(
kuàng
何况
  
)
yòu
yǒu
kòngr  
空儿
  
,
chū
出去
zǒuzǒu
走走
  
!

It's fine; moreover, you are free. Let's go out for a walk.

2
nián
年纪
le
  
,
kuàngqiě
况且
  
(
kuàng
何况
  
)
tuǐjiǎo
腿脚
yòu
hǎo
不好
  
,
suǒ
所以
不大
chūmén
出门
  

She is old and walks with difficulty, so she does not go out often.

3
Lián
chéng
成绩
hǎo
de
xuésheng
学生
dōu
tīng
dǒng
  
,
kuàng
何况
shì
chéng
成绩
chā
de
xuésheng
学生
  
?

The good students cannot understand it, let alone the slow ones.

4
Zuò
zài
qiánmiàn
前面
dōu
kàn
bu
qīng
  
,
kuàng
何况
zuò
zài
hòumiàn
后面
  
?

I cannot see clearly in the front of the classroom, let alone at the back.

又 can be used after both words (as in examples ① and ②), but if used in the front, it can only precede 何况.
5
ren
大人
dōu
chū
zhège
这个
wèn
问题
  
,
yòu
kuàng
何况
shì
háizi
孩子
  
?

The grownups don't know the answer to the question, let alone children.

6
Fángzi
房子
cuò
不错
  
,
yòu
kuàng
何况
tài
guì
  
,
jiù
mǎi
le
  

The house is nice and not expensive, so you'd better buy it.

Related

况且何况