Modal Verbs for Preference(10 marks)

There are many resources online.

http://www.atkielski.com/ESLPublic/Grammar%20-%20Modal%20Verbs%20I.pdf

Examples:
http://www.zozanga.com/grammar/verbmodal.htm

I don't wanna copy stuff from online. But there're many links you can refer to by doing a search on Google.

For preference, I'm not sure what you mean. "Would " is a modal verb. You can use it in a question to ask for preference, for example

Would you like it cold or warm?
Would you prefer juice or water?