Homework - Grammar Structure 2

This is your first homework here. I want you to do this before the last day of this month. This is what I want you to do; choose one grammar structure from below and find any good video clips, sites or web pages about it and then post the addresses in the comment box so that other students can see them. If you would like to explain about the grammar, that will be great. I don't mind if you use Korean, or find any Korean  sites. That's fine. Please don't choose the same grammar with others.

I will explain  in class again. If you have a question, you can always email me.

You can choose your grammar structure among these;
-expressing possiblity or ablity (can, could, be able to)
-making deductions (may, might, could, can't, must)
-giving advice & suggestion (should, ought to, had better, have to, must...)
-countable & uncountable nouns
-article (a, an, the)
-conjunction (and, but, or, so)
-conjunction (noun clause)
-conjunction (adjective clause)
-conjunction (adverb clause)
-conditional clause (Second condtional clause)
-conditional clause (Third conditional clause)
-passive voice

(5 stamps)