重点一、重点词汇solar, telescope, certainly, unless, double, mystery, belong to, look through.二、重点句型He looks through the telescope.Maybe Brian and I can join you after supper.I don’t think you can find one unless you have a bigger telescope.Actually, double the size of your house.Well, it’s worth a try, even if I don’t find a planet.The Milky Way has more than five hundred billion stars.教学难点unless 的用法.教法Listen, ask and answer.学法Listen, answer and write.教具tape slides教 学 教 程教 师 活 动学生活动Step 1.Greetings.设计意图:让学生做好上课的准备。Step 2. Think about it.Do you know any of the