三年级英语下册Unit6HowmanyPartB（第二课时）习题课件人教PEP版.ppt

sixteen,sixteen,sixteen,seventeen,seventeen,seventeen,eighteen,eighteen,eighteen,十六,十七,十八,nineteen,nineteen,nineteen,twenty,twenty,twenty,十九,二十,seventeen,twenty,sixteen,fifteen,eighteen,sixteen,eighteen,sixteen,twenty,eighteen,