Yabla Chinese

Yabla video uses of 疑问句
在 zài
陈述句 chénshùjù
后边 hòubian
加上 jiāshàng
语气词“ yǔqìcí"
吗” ma"
就 jiù
构成 gòuchéng
了 le
汉语 Hànyǔ
的 de
疑问句 yíwènjù
After adding the word "ma" at the end of the declarative sentence, now it becomes an interrogative sentence.