It can be quoted and will not be convicted of plagiarism. But don't quote too much, just one or two sentences. Many perfect compositions or other articles in the senior high school entrance examination will quote famous aphorisms or hot sentences of current affairs.

If you indicate the quotation, the quotation generally exceeds a certain number of words, and the score of this composition will not exceed 40 points. It is not recommended to do so. If you add an unknown sentence directly to the text of the article, it is plagiarism. If you want to use the extracted sentence, that is, put quotation marks, you can use.