I saw my friend Sherry cheating on a test. I think cheating on a test is not good. Should I let the teacher know about it?
(What is the meaning of the last sentence containing 'let'? Would you like to paraphrase it? Can we use 'make' or 'have' instead of 'let'?)
In that sentence, "let" means "allow" or "permit."
A close paraphrase is "Should I tell the teacher about it?"
In this context, "let" means to allow or permit something to happen. To paraphrase the sentence, it would be: "Should I inform the teacher about it?" or "Should I inform the teacher of Sherry's cheating?"
Using "make" or "have" instead of "let" could change the meaning of the sentence. If you say, "Should I make the teacher know about it?" it implies that you would force or compel the teacher to be aware of the situation. If you say, "Should I have the teacher know about it?" it implies that you would request or ask the teacher to be aware of the situation. Both "make" and "have" imply a higher level of control or influence on your part compared to "let."