Text Analysis: Main Idea and Devices for Developing It Back I Main idea Part I When Sam Wilson was providing Part i meat to the army in a war, some explained the initial letters“Us”as Part ll Uncle Sam. It became popular later because of a character in political Part iv cartoons. An artist created its portrait in army recruiting posters. PartⅤ I Devices for developing it (Paras. 19-22 Time sequence(时间法)[ For details yMain idea ? Devices for developing it ? . Text Analysis: Main Idea and Devices for Developing It Part V (Paras. 19-22) Part I Part III Part IV Part II When Sam Wilson was providing meat to the army in a war, some explained the initial letters “US” as Uncle Sam. It became popular later because of a character in political cartoons. An artist created its portrait in army recruiting posters. Time sequence (时间法) For details Back