This is the 10257th most frequent Korean word.
교과서에
"In the textbook."
Here, '교과서에' is used to refer to the location where important information can be found, emphasizing its role as a source of information.
교과서에서 중요한 내용을 확인하세요.
Check the important content in the textbook.
In this sentence, '교과서에' indicates origin or source, specifying that the words to memorize are taken from the textbook.
학생들은 교과서에 나온 단어를 외워야 합니다.
Students must memorize the words from the textbook.
Here, '교과서에' describes the location of the picture, establishing that it is within the textbook.