吧 is a grammatical particle in Chinese that is used to make a suggestion or to soften the tone of the sentence.
It is always the last character in a sentence.
Some examples of making suggestions:
走吧 zǒu ba – let’s go
吃饭吧 chīfàn ba – let’s eat
休息一下吧 xiūxi yīxià ba – take a rest
piányi yīdiǎn ba
Can it be a little cheaper?
Softening the tone of a sentence or making a concession
好吧 Hǎo ba – alright then
算了吧 Suànle ba- forget it
应该是吧 Yīnggāi shì ba – I think that’s right
再等等吧 Zài děng děng ba- Why don’t you wait a little longer?