英语人教版八年级上册Unit 1 How often do you exercise ?Teaching goals:1. Words &phrases: how often , hardly , twice , once , difference , look after , although ,etc .2. Learn to talk about how often do you do things .3. 一些表示频率的副词: always , usually , often , never , hardly ever , sometimes .4. 句子结构: What do you usually do on weekends ? How often ?及回答.Important and difficult points :What does she /he do on weekends ?She often goes to the movies .How often do you shop ?O