For example: -When it says: "This is a nice apple" then surely cannot write into "This is a nice apple". -If you say "I went to school yesterday." you can not write to "I go to school yesterday."
For example: - When you say: "This is a nice apple", it certainly can not write a "This is a nice apple". - If you say "I Went to school yesterday." Can not write the "I Go to School yesterday. "