Unit 3 Language in use导学目标:1.掌握并正确运用单词:face 2. 能够正确使用冠词,准确读出数字。自主预习:根据句意及首字母或汉语提示填空1. Our world is f_______________ many problem.2. We shouldn’t throw away the r__________everywhere.3. We arrived late because the _____ (交通) was busy.4. The factory...