Yabla video uses of 疑问句

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