Unit 9 It's one hundredTry to cout the numbersonetwo threefour fivesix seveneight nineten eleventwelve3+5=7+8=4+14=9+11=8151820Three and five is eightSeven and eight is fifteenFour and fourteen is eighteenNine and eleven is twenty算一算···and···is···New wordhomeworkrightwrong找规律two twelve three thirteen four fourteenfive fifteen sevenseventeensix sixteeneight eighteennine ninteentwentythirtyfortyfiftysixtyeightyninty表示十几的数字都是以 teen 结尾，发 /ti:n/ 的音。表示几十的数字都是以 ty 结尾，发 /ti/ 的音。seventyNew word21 twenty-one32 thirty-two43 forty-three54 fifty-four65 sixty-five76 seventy-six87 eighty-seven98 ninty-eight99 ninty-nine100 one hundred数字几十几——先写几十再写连字符，再写数字几。看视频回答问题1.Miss Li 在做什么？2. 谁做对了？谁做错了？3. 你听到了哪几个数字？Practice 请用英语表达下列算式21+11=3220+23=4341+13=5456+9=6565+33=88Twenty-one and eleven is thirty-two.Twenty and twenty-three is forty-three.Forty-one and thirteen is fifty-four.Fifty-six and nine is sixty-five.Sixty-five and thirty-three is eighty-eight.···and···is···背一背基数词，很容易。0—12 词各异，每个都要单独记。13—19 结尾 teen 。 t-e-e-n teen.几十结尾要加 ty 。 t-y ty t-y ty.几十几，也容易。先说几十，再说几。中间短杠“—”加上去，一百就是 one hundred 。Homework1. 抄写本课新单词。2. 背诵口诀。3.Let's Act 和 Let's ReadThank you ！
