The phrase 'How about...' is a common and informal way to propose an idea or a course of action for others to consider, making it a suggestion.

The introductory phrase 'Under no circumstances' signifies a strict and absolute rule against a particular action, which is a form of prohibition.

The phrase 'Your presence is requested' is a formal and standard expression used to extend an invitation to an official event or meeting.

The phrase 'I would be most grateful if you could...' is an exceptionally polite and formal way to ask someone to do something, thereby functioning as a request.

The sentence explicitly uses the word 'advice' to propose a prudent course of action, which makes it a clear suggestion.

The use of the strong imperative verb 'Cease' at the beginning of the sentence indicates a direct, authoritative command, classifying it as an order.

The words 'strictly forbidden' explicitly state that an action is not allowed, making the sentence a clear and direct prohibition.

This sentence expresses a strong and respectful desire for someone's participation in a special role, which functions as a very formal invitation.

The question is structured in a polite and non-demanding way ('Would it be possible...') to ask for a favour, which is characteristic of a request.

The phrase 'the pleasure of your company is requested' is a formal and traditional way of extending an invitation to an event.

The phrase 'are to attend' combined with 'mandatory' indicates a command or a strict instruction that must be followed, making it an order.

The structure 'If I were you, I would...' is a classic grammatical form used to give advice or make a suggestion.

The phrase 'I'd be very grateful if you could...' is a polite and formal way of making a request for someone to do or not do something.

The statement clearly indicates that an action, 'flash photography', is 'not allowed', which serves as a prohibition.

Although phrased as a question, this is a rhetorical command. The speaker is not seeking information but is telling someone to stop an action immediately.

The phrase 'we'd love for you to come' explicitly invites the listener to a social event.

The phrase 'strongly discouraged' functions as a prohibition, indicating that an action is not permitted or is highly disapproved of in a particular setting.

The verb 'recommend' explicitly signals that the speaker is offering advice or a suggestion, not a command.

The phrase 'I must insist' removes any option for refusal and elevates the statement from a request or suggestion to a firm order.