Summer: Week 3

http://srjordan.wordpress.com/2008/11/27/02-demonstrative-adjectives-part-2-this-these-that-those/

Secret: I learned a similar rhyme in HS to the one in the video, which went like this: "This and these both have T's, that and those don't." After watching the video, please explain in your own words what my rhyme means.