LIKE and ALIKE
like is a preposition like means similar (not the same)
Timmy is like Bobby. (Timmy is similar to Bobby.) Timmy is not like Bobby. (Timmy is not similar to Bobby.) photo by http://www.flickr.com/photos/unclejojo/
alike is an adjective or adverb alike can mean similar or the same
Dan and Dave are alike. (adj) Dan and Dave speak alike. (adv)
*notice that alike comes at the end of a sentence or clause Doris and Dana are not alike. (adj) Doris and Dana do not dress alike. (adv) photo1 http://www.flickr.com/photos/laundry/3691918750 photo2 http://www.flickr.com/photos/project2000/8290690849/
TONY HARTMAN 2013