七年级上册（2013年6月第2版）《Section B 1a—1e》新课标PPT课件下载-阳泉市优质课

eleven

twelve

seventeen

fourteen

fifteen

sixteen

nineteen

eighteen

thirteen

thirty

twenty

twenty

-one

twenty

-two

twenty

-three

twenty

-four

twenty

-five

twenty

-six

twenty

-seven

twenty

-eight

twenty

-nine

thirty-one