Polite request / offer / suggestion

In English we use phrases to ask for something we want politely.

I'd like... =  I would like...  / Can I have...? / Could I have...?

Examples sentences : 

• I'd like a bottle of water, please.
• Can I have the bill, please?
• Could I have the chicken salad, please?

We use Would you like...? for offers (when we want to give something or help someone)

Examples sentences :

• Would you like a drink?
• Would you like cheese in your burger?
• Would you like a cup of tea?

Notes for use of polite request / offer / suggestions :

'Would you like' has the same meaning as 'Do you want' but is a more polite way of offering something!

In English we use the question phrase 'Why don't you / we...?' to make a polite suggestion.

• Why don't you see a doctor?
• Why don't you go home and go to bed?
• Why don't you take the day off?
• Why don't we get a bottle?