课件32张PPT。课前预习课堂探究当堂检测somewhere camera invention somewhere different Have been to to spend 曾经去过某地 去某地了 在某地待了多长时间 has gone to have been in have been to isn't it did he somewhere camera invention museum treasure cleaning to go read to buy 课件25张PPT。课前预习课堂探究当堂检测invent unbelievable progress rapid unusual toilet encourage social peaceful perfect itself collect German ride province tea art tea set a couple of unbelievable has progressed such a rapid been to unusual encourages to think finally realized collecting 进步；进展 make progress in made great progress to progress 鼓励 encourage sb.to do sth. peaceful encourage collecting progress rapid unbelievable unusual Germans invention have eaten 课件17张PPT。课前预习课堂探究当堂检测Have been to Have tried 尝试 尽力做某事或设法做某事 试着做某事 try doing tried to finish to learn itself progressed peaceful is 课件29张PPT。课前预习课堂探究当堂检测thousand safe simply fear whether Indian Japanese fox whenever spring mostly thousands of on the one hand...on the other hand all year round thousands of Southeast Asia to take On the one hand three quarters of On the other hand to practice have any problem Whether or whenever you like 数以千计的 基数词＋thousand thousands of 四分之一 safe whether Japanese fears thousand to take are learning Indian inventions
