The adverb 却 "however"
却 is used to indicate something was contrary to expectations: "however", "but still", "but all the same".
The adverb 却 
is most commonly used in compound sentences. 却 is placed between two statements, usually in a situation when the second statement contradicts the first statement. 却 emphasizes the contradiction between two statements.
is most commonly used in compound sentences. 却 is placed between two statements, usually in a situation when the second statement contradicts the first statement. 却 emphasizes the contradiction between two statements. Pay attention
却 is similar to the conjunction "but". However, 却 is an adverb, and it cannot be placed between two parts of a sentence.
却 is placed before a predicate.
It is often used in sentences that also include the following conjunctions: 可是 and 但是 .
and 但是 .Examples
我是你最好的朋友 ，但是你却没邀请我
I'm your best friend, but you didn't invite me
wǒ shì nǐ zuì hǎo de péngyou, dànshì nǐ què méi yāoqǐng wǒ
弟弟比他小10岁，却比他更懂事
Even though my brother is 10 years younger, my brother is more sensible than him
dìdi bǐ tā xiǎo shí suì, què bǐ tā gèng dǒngshì
这辆汽车不大，然而却出奇地宽敞
The car is small, but surprisingly roomy inside
zhè liàng qìchē bú dà, rán'ér què chūqí de kuānchǎng
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