Sentence 1: I really want to learn how to rollerblade. 
 Sentence 3: I asked him if he would teach me and he said yes 
 Sentence 4:  I bought my own rollerblades the other day 
 Sentence 5:  I can't wait to learn how to rollerblade 
 Option 1: My friend Mark is a terrible roller blader. 
 Option 2: My friend Mark is an amazing rollerblader.