Unit 3Integrated skills Teenage problemschemistry laugh at bookworm progress worried go overn 化学嘲笑 n 书虫,书呆子 n 进展,进步 adj 担心的,烦恼的复习;回顾aloud pronounce correctly pronunciation mention don’t mention itadv 大声地;出声地 vt 发音 adv 正确地 n 发音 vt 提及;说起不客气A: What’s wrong B: I’m really tired because I studied until midnight last night A: Why don’t you go to bed earlier this eveningLook at the problems and make conversationsPair work