The adverb 八成 "most likely"
The adverb 八成 
indicates that some action is most likely to be completed.
It is placed either before a verb used as a predicate or an adjective.
The modal verb 会 , which indicates the future tense, is often placed after 八成.
indicates that some action is most likely to be completed.
It is placed either before a verb used as a predicate or an adjective.
The modal verb 会 , which indicates the future tense, is often placed after 八成. Pay attention
It is often used with the erization: 八成儿 .
.Examples
它八成还会继续发生
It will most likely happen again
tā bāchéng hái huì jìxù fāshēng
我看这件事八成儿会惹他不开心
I think it will certainly make him miserable
wǒ kàn zhè jiàn shì bāchéngr huì rě tā bù kāixīn
我们八成儿太晚了
We’re probably already too late
wǒmen bāchéngr tài wǎn le