During the undergraduate course, in fact, in addition to the final graduation thesis and some very important papers, I need to check them again. The remaining 90% or more do not need to be checked by the teacher himself.

But teachers should prevent some students from being lazy to copy and paste. There are two ways.

1. Students will carefully check their written papers and submit a duplicate check report together with the papers.

2. Arrange your own study committee or student union members to check, and then grade everyone according to the quality of the paper.

In short, even if the teacher doesn't check it himself, he will check it in other ways.

I suggest you practice your writing ability from a simple paper now, because you need this ability when you graduate.