Correct

假如 vs 如果 vs 要是

/ jiǎrú vs rúguǒ vs yàoshi /
Strokes

Definition

假如, 如果, and 要是 are all Conjunctions, which means “if; in case”. The three words have the same usage, only 要是 is the most colloquial.

Example

假如, 如果, and 要是 are generally interchangeable when indicating a hypothesis, and in the second clause, there are usually 就, 那么, etc. to correspond.
Sometimes 的话 or 的时候 (indicating the condition of time) can be added, for example ③ and ④.
1
Jiǎ
假如
  
(
guǒ
如果
  
)
  
(
yàoshi
要是
  
)
xià
下雨
  
,
yùndònghuì
运动会
jiù
shùnyán
顺延
  

If it rains, the sports meet will be put off.

2
Jiǎ
假如
  
(
guǒ
如果
  
)
  
(
yàoshi
要是
  
)
tóng
同意
  
,
men
我们
jiù
kuàir  
块儿
gān
  
!

If you agree, let's do it together.

3
Jiǎ
假如
  
(
guǒ
如果
  
)
  
(
yàoshi
要是
  
)
lǎorén
老人
hái
zài
de
huà
  
,
gāi
yǒu
100
100
suì
le
  

If the old man is still alive, he can be 100.

4
Jiǎ
假如
  
(
guǒ
如果
  
)
  
(
yàoshi
要是
  
)
yǒu
kòngr  
空儿
de
shíhou
时候
  
,
qǐng
kànkan
看看
  

If you are free, please go to see her.

假如, 如果, and 要是 are interchangeable when indicating analogy (if judgment A is tenable, the similar judgment B ought to be tenable, too).
Sometimes 说 can be added.
5
Jiǎ
假如
  
(
guǒ
如果
  
)
  
(
yàoshi
要是
  
)
shuō
shí
食物
shì
yònglái
用来
mǎn
满足
shēn
身体
qiú
需求
de
  
,
me
那么
shū
书籍
jiùshì
就是
yònglái
用来
mǎn
满足
jīngshén
精神
qiú
需求
de
  

If food can meet the need of your body, books will meet that of your spirit.

6
Jiǎ
假如
  
(
guǒ
如果
  
)
  
(
yàoshi
要是
  
)
shuō
xiǎoxué
小学
lǎoshī
老师
shì
yuándīng
园丁
  
,
me
那么
yuàn
医院
de
shi
护士
jiùshì
就是
báitiānshǐ
白衣天使
  

If we view the teachers in a primary school as gardeners, the nurses in a hospital as angels in white.

假如, 如果, and 要是 are interchangeable when indicating concession.
7
Jiǎ
假如
  
(
guǒ
如果
  
)
  
(
yàoshi
要是
  
)
shuō
de
shāng
néng
hǎo
  
,
jiāng
liúxià
留下
cán
残疾
  

Even if his wound is well, he will be disabled.

8
Jiǎ
假如
  
(
guǒ
如果
  
)
  
(
yàoshi
要是
  
)
shuō
zhè
piān
dōng
东西
háiyǒu
还有
可取
zhī
chǔ
  
,
jiùshì
就是
luóliè
罗列
le
xiē
一些
kào
可靠
de
liào
资料
  

If there's something valuable in my article, I think it is a display of some reliable information.

假如, 如果, and 要是 are all be used in front of nouns, pronouns, numerals, and measure words (especially 要是).
9
Zhè
shì
kuīde
亏得
jiā
大家
  
,
jiǎ
假如
  
(
guǒ
如果
  
)
  
(
yàoshi
要是
  
)
rén
  
,
hái
zhēn
bàn
chéng
  

But for you, I would not have done it.

10
Míngtiān
明天
必须
ma
  
?
Jiǎ
假如
  
(
guǒ
如果
  
)
  
(
yàoshi
要是
  
)
xià
下雨
ne
  
?

Must we go tomorrow? How can we do in case of rain?