Correct

大不一样

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Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/大不一样-Chinese-idioms-Cchatty-bd72cfa0-560d-44db-a635-555717d45cd6-1612776827.jpg

Collocation

1
大不一样的……
2
情况/结果/态度大不一样
3
A和/跟/与/同B(相比)大不一样

Definition

大不一样

Literally means:

(to be) very different

Actually means:

It means being different in many respects. It is used to describe concretely or abstractly a person or a thing.

很不相同,有许多不一样的地方。可指人或事物(具体或抽象的)。

Example

Used as predicate or attributive. (作谓语、定语)
1
xiànzài
现在
shì
zǒngjīng
总经理
  
,
shēnfèn
身份
yàng
不一样
le
  
,
jiā
大家
zài
néng
suíbiàn
随便
gēn
kāiwánxiào
开玩笑
le
  

He is now the general manager, the identity is very different, people can no longer casually joke with him.

2
Méi
xiǎngdào
想到
  
,
jīntiān
今天
duì
de
tàidu
态度
shàng
上次
xiāng
相比
yàng
不一样
le
  

I didn't expect him to have a very different attitude to me today than he did last time.

3
tóngyàng
同样
de
shíyàn
实验
yòu
zuò
le
  
,
méi
xiǎngdào
想到
què
dào
得到
le
yàng
不一样
de
jiēguǒ
结果
  

He did the same experiment again, but he didn't expect to get a very different result.