Gerald is careful. Piggie is not. Piggie cannot help smiling. Gerald can. Gerald worries so that Piggie does not have to. Gerald and Piggie are best friends. In My Friend is Sad, Gerald is sad. How can Piggie be happy if Gerald is sad? Told entirely in speech bubbles with a repetitive use of familiar phrases, this highly original book is perfect for children just learning to read. 作者簡介 Mo Willems is the author of the Caldecott Honor winning books Don’t Let the Pigeon Drive the Bus!, Knuffle Bunny and Knuffle Bunny Too. An acclaimed animator and television script-writer, he has won six Emmy awards for his writing on Sesame Street, and is also the creator of Sheep in the Big City. Mo lives with his family in Massachusetts.