firstofall,iwouldliketoextendmysinceregratitudetomysupervisor,zhanghong,.

　　,whoseprofoundknowledgeofenglishtriggersmyloveforthisbeautifullanguageandwhoseearnestattitudetellsmehowtolearnenglish.

　　iamalsodeeplyindebtedtoalltheothertutorsandteachersintranslationstudiesfortheirdirectandindirecthelptome.

　　specialthanksshouldgotomyfriendswhohaveputconsiderabletimeandeffortintotheircommentsonthedraft.

　　finally,iamindebtedtomyparentsfortheircontinuoussupportandencouragement.