Lesson 9 Open your book to page 110 请翻到第110页 Lesson 9 What Day Is It? 第九课 今天星期几? Let's Chant! 唱一唱! What day is it today? Sunday.It's Sunday. 今天星期几? 星期日,今天星期日. We skate on Sunday. 星期日我们去溜冰. What day is it today? 今天星...