目录Module1Wonders of the world .................................................................................................................................... 1Unit 1 It ’ s more than 2,000 years old................................................................................................................ 1Unit 2 The Grand Canyon was not just big....................................................................................................... 1短语归纳 ............................................................................................................................................................. 2用法集萃 ............................................................................................................................................................. 3Module 2 Public Holidays ........................................................................................................................................... 4Unit 1 My family always go somewhere interesting as soon as the holiday begins. ...................................... 4Unit 2 We have celebrated the festival since the first pioneers arrived in America. ....................................... 5短语归纳 ............................................................................................................................................................. 6用法集萃 ............................................................................................................................................................. 6Module 3 Heroes ......................................................................................................................................................... 7Unit 1 She trained hard, so she became a great player later ............................................................................. 7Unit 2 There were few doctors, so he had to w...