四年级下册英语课件-Unit1 Welcome to my new home!Lesson 2人教精通版.(共18张PPT)

1、人教精通版英语-四年级-下册Unit 1 Welcome to my new home.Lesson 2难点名称：正确理解和使用“There be ”句型的单数和复数形式。目录CONTENTS2导入知识讲解课堂练习小结How many apples are there on the tree?There are twenty apples on the tree.How many apples are there on the tree now?There are thirteen apples on the tree now.导入概念结构用法There be 句型表示“存在”“有”，其中be

2、动词有时态和单复数变化。There be+主语（人或物名词）+地点知识讲解结构：a.There is +单数可数名词不可数名词 There is a book on the desk . 桌子上有一本书。There is some water in the bottle.瓶子里有些水。b.There are +复数名词There are some pictures on the wall.墙上有些图画。There are two apples in the basket.篮子里有两个苹果。看名词单数is复数are不可数的用is看名词There _ a doll in the toy box.

3、A. is B. are There _ some bread on the plate. A. is B. are There _ a lot of green trees in thePark. A. is B. are There a cat under the tree.isThere two dogs under the tree.aretherethere 是个近视眼。 There be句型的就近原则 there be句型中“be”是单数还是复数形式取决于后面紧跟的名词是单数还是复数。例： There are two books and a pen on the desk. The

4、re is a pen and two books on the desk.be动词要随句子中离它较近的名词单复数变化而变化，这就叫就近原则。There is a cat and two dogs under the tree.There are two dogs and a cat under the tree.课堂练习Part AThere _ a desk and fifty-five chairs in the classroom. A. are B. is Part BThere _ fifty-five chairs and a desk in the classroom. A. are B. is There be有特点，主语放在be后面，单数主语用is ，复数主语要用are。变否定很简单，be后要把not添。变疑问也不难，把be提到there前。否定疑问any换，就近原则多多练。There be 口诀小结本节课主要采用讲练结合的方式，首先对There be句型的概念、构成和用法进行了讲解，随后对There be句型的就近原则进行了重点讲述并辅之以例句。最后通过练习形式巩固学生对这一句型的运用。同时