par. (at the end of an imperative sentence) adding a softened tone
Other meanings
[bā]   v./n. puff (at a pipe); bar (to drink)
[bā]   onomat. bang, crack (sound of firing gunshot or something breaking)
[ba]   par. (at the end of a declarative sentence) indicating uncertainty
Simplified stroke orders are based on the 'Standard of National Commonly-used Mandarin Chinese Characters (现代汉语通用字笔顺规范)', issued by the China National Language and Character Working Committee (国家语言文字工作委员会) on April 7th 1997. Traditional stroke orders are based on information issued by the Taiwan Ministry of Education.
tíng zhèr ba
phr. Please stop here.
nǐ jué dìng ba .
phr. It's up to you.
wǒ men yì qǐ wán ba
phr. Let's play together.
wǒ shuō kuài diǎnr ba
phr. I say, be faster (when urging someone)
qǐng zuò ba
phr. Please sit down
hē diǎn chá ba
phr. Drink some tea!
gěi , chī yào ba .
phr. Here you are -- take the medicine.