Greetings! There are obviously different rules for written and spoken English. While in speech you could say: "my dream's taken away," as a contraction for my dream is taken away. However, I do not believe it is proper English to write this contraction because of the confusion arising from the possessive interpretation of the word dream's, implying taken is possessed by the dream. I cannot seem to find any rule for this question, maybe because I do not know how to word it. I just keep finding apostrophe rules for possessives. Thank you!