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Unit four  On the farm

一.教学内容：
Unit four  On the farm

二. 重点、难点
1. 复习与巩固比较级和最高级
2. 词语辨析： have to 与must
            arrive , reach 与get
            job 与work
            grow 与plant
            until 与 not until

三. 具体内容
1. 复习比较级和最高级
（1）The box is much heavier than that one.
（2）Living in the country is more exciting than living in the city.
（3）Of all the basketball players in China, he is the tallest.
（4）English is one of the most important languages in the world.
（5）Chocolate is my favorite food. I think it’s more delicious than any other food.
（6）He is taller than any of the other boys in his class.