Unit 6 Happy birthday! （第三课时）. How many...(s)?. ABCs song. Aa Bb Cc Dd Ee Ff Gg Hh Ii Jj Kk Ll Mm Nn Oo Pp Qq Rr Ss Tt Uu Vv Ww Xx Yy Zz. mbrella. nder. u. u. est. et. v. v. ater. et. w. w. bo. fo. x. x. ellow. o-yo. y. y. oo. ip. Z. z. - PowerPoint PPT Presentation