四年级英语下册《Therenbsp;be句型》微课教学设计.doc

四年级英语下册Therenbsp;be句型微课教学设计1、讲授There be句型的定义及结构 2、正确使用There be句型的肯定，否定及一般疑问形式 一：There be句型的定义及结构 1、定义：There be句型表示某地有某物或某人。 2、结构：一共分为三种 (1) There is +单数可数名词+ 地点状语. There is a book on the desk. There is an umbrella in the bag. (2) There is +不可数名词+ 地点状语. There is some milk in the cup. There is some sheep and a cow on the farm. (3) There are +复数名词+地点状语. There are four chairs in the living room. There are some birds and a balloon in the sky. 从以上例句中我们可以发现there是引导词，在句中不充当任何成分，翻译时也不必译出。句子的主语是某人或某物，be动词表示“有”，谓语动词be要与主语（某人或某物）的单复数保持一致。Some既可用于可数名词也可用于不可数名词。 二：There be 句型的变化 1：变成否定句 There be+not+某物+地点状语。 There be句型的否定式的构成和含有be动词的其它句型一样，在be后加上not. 注意，is not的缩写是isnt，are not的缩写是arent. 当肯定句中有some时，要将其改为any（疑问变化也一样）。 There isnt a book on the desk. There isnt an umbrella in the bag. There isnt any milk in the cup. There isnt any sheep and a cow on the farm. There arent four chairs in the living room. There arent a lot of birds and a balloon in the sky. 2：变成一般疑问句 ,. There be句型的一般疑问句变化是把be动词调整到句首，再在句尾加上问号即可。 基本句型：Be + there+某物+地点状语？ 回答：Yes, there + be. No, there + be +not. - Is there a book on the desk? -Yes,there is. - Is there an umbrella in the bag? -No,there isnt. - Is there any milk in the cup? -Yes,there is. - Is there any sheep and a cow on the farm?- No,there isnt. -Are there four chairs in the living room? -Yes,there are. - Are there a lot of birds and a balloon in the sky?- No,there arent. 三：开动脑筋练一练 1. There_a beautiful garden in our school. 2. There _some bread on the table. 3. _there any maps on the wall? _，there is. 4. There _twenty desks in our classroom. 5. _there a cup of tea on the table? No,there _. 6. There_some apple juice in the glass. 7. There_ two chairs and a bed in her room. 8. There _some children in the park. 9. There_a teacher and many students in our classroom. 10. There_an orange o