外研版小学英语There_are_only_nineteen_crayons精编版.ppt

one seven two five eight ten nine three eight four one eleven two twelve three thirteen four fourteen five fifteen six sixteen seven seventeen eight eighteen nine nineteen ten twenty 基数词的构成1、1——12是独立的词。 one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve 2、13——19 在3——9词尾加后缀teen, 但应注意13,15,18的拼写形式 thirteen, fifteen, eighteen eleven seventeen twelve sixteen thirteen eighteen fourteen nineteen fifteen twenty five ten six one three eight four two seven nine ⑾ eighteen ⑿ fifteen ⒀ eleven ⒁ seventeen ⒂ twelve ⒃ twenty ⒄ thirteen ⒅ fourteen ⒆ sixteen ⒇ nineteen (21) twenty--one Listen and say. 1. 11+4 = 15 2. 12+6 = 18 3. 14+6 = 20 4. 17+2 = 19 Listen and say. 1. 11+______ = _______ 2. _____ +4 = _______ 3. ______+2 = _______ 4. 3+ ______ = _______ 5. _______+1 = _______ 6. 2+ ______ = ________ 6 17 15 19 18 20 13 16 16 17 12 14 five flowers seven computers twelve frogs six bananas three tomatoes seven pencils five keys eight erasers ten