* Simple: The teacher offered a suggestion for improving the project.
* With a specific suggestion: My suggestion is to take a break and come back to the problem later.
* In a question: Do you have any suggestions for dinner tonight?
* Showing agreement: I like your suggestion about visiting the museum.
* Showing disagreement: I appreciate your suggestion, but I think we should stick to the original plan.
Let me know if you'd like more examples!