I know a problem with pronunciation.
I know that classification . It is four types
I know what kind of language are you using
I learn to use the correct word
I know writen texts contain most than just printed words.
I have a problem with pronunciation
I know of signs and symbols
ปัญหาของฉันคือ บางเรื่องฉันก็ไม่เข้าใจ ตีความหมายไม่ได้
my problem is something I do not understand what to do.