UNIT 6 Let's Go! Lesson 45: Cheap or Expensive?

[ti:UNIT 6 Let's Go! Lesson 45: Cheap or Expensive?]
[00:01.87]UNIT 6 第六单元
[00:03.69]Let's Go! 我们出发吧！
[00:05.95]Lesson 45: 第45课：
[00:08.03]Cheap or Expensive? 便宜还是贵？
[00:11.43]1.
[00:12.95]How much is ____? ……多少钱？
[00:15.65]How much is this? 这个多少钱？
[00:17.48]Two yuan. 2元。
[00:19.01]Oh, that's expensive. 哦，太贵了。
[00:21.90]Are these erasers on sale? 这些橡皮打折吗？
[00:23.98]Yes! 是的！
[00:25.30]How much for one eraser? 一块多少钱？
[00:27.52]One yuan. 一元。
[00:28.92]Oh, that's cheap! 哦，很便宜！
[00:31.08]I'll take four, please. 我要四块。
[00:33.25]Thanks! 谢谢！
[00:34.61]You're welcome. 不客气。
[00:37.54]2.
[00:39.09]What's ____ plus/minus¹ ____? ……加/减……等于……？
[00:43.22]thirty 三十
[00:44.84]thirty-one 三十一
[00:46.82]thirty-two 三十二
[00:48.85]thirty-three 三十三
[00:50.84]thirty-four 三十四
[00:53.01]thirty-five 三十五
[00:55.29]thirty-six 三十六
[00:57.46]thirty-seven 三十七
[00:59.73]thirty-eight 三十八
[01:01.76]thirty-nine 三十九
[01:03.88]forty 四十
[01:05.50]fifty 五十
[01:07.30]sixty 六十
[01:09.01]seventy 七十
[01:10.81]eighty 八十
[01:12.29]ninety 九十
[01:14.18]one hundred 一百
[01:17.05]What's three plus four? 三加四等于多少？
[01:19.74]It's seven. 七。
[01:21.97]Thirteen plus eight equals twenty-one. 十三加八等于二十一。
[01:26.56]Twenty plus sixteen equals thirty-six. 二十加十六等于三十六。
[01:32.26]What's ten minus eight? It's two. 十减八等于多少？二。
[01:36.72]Forty-seven minus twenty-two equals twenty-five. 四十七减二十二等于二十五。
[01:43.86]Fifty-nine minus nineteen equals forty. 五十九减十九等于四十。
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1 minus   

n.负号；adj.减的，负的，阴性的；prep.减，缺

参考例句：

• The temperature was minus 30 degrees.气温为零下30度。
• He seems to have mistaken a minus for a plus.他似乎把负号误作正号了。