Unit 2 Friends and ColoursLesson 9Lead-inLet’s sing togetherNew Wordswindow窗户LetterskitelakemouthnoseKkLlMmNnPractiseMatch the letters with the words.Let’s do it!Open and CloseOpen the window.Close the window. 打开窗户。关上窗户。Open the door.Close the door.打开门。关上门。Let’s do it!Open your pencil box. Close your book. Play-rolesClose the pencil box. Open the book.