英语七年级下册Unit8-语法专项课件(There-be句型)(新人教版)电子教案.ppt

英语七年级下册Unit8-语法专项课件(There-be句型)(新人教版)there be句型定义there be 构成的句子称为“存在句”。此句型构成形式一般为“there be+某人/物+地点/时间”，意为：在某地有某物（或某人）。There is a cat under the tree.树底下有一只猫。There are two students in the classroom.教室里有两个学生。there be句型定义there be句型结构肯定句：there be+其他否定句：there be+not+其他疑问句：be+there+其他There is a bag on the desk.There isnt a bag on the desk.Is there a bag on the desk?there be句型结构“Whats+表示地点的介词短语”用there be句型来回答。Whats on the desk?There are 5 eggs on the desk.注意：询问的时候，be动词只能用单数is，而回答时需视情况而选用单复数。易错点1a.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。用法用法易错点1b.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。用法用法易错点2There be句型的就近原则There be 就近原则：若句子中有几个并列主语时，be动词的形式要与离其最近的一个主语在人称和数上保持一致。1.There is a girl and two boys under the tree.2.There are two boys and a girl under the tree.易错点3have/has与主语是“所属关系”，强调的是“拥有，占有”。there be表示“存在关系”，强调某地“有”某物，（某地存在）There be与have的区别易错点3I have many friends.我有很多朋友。There is a book on the desk.桌子上有一本书。(拥有）（某地存在）【典例1】What_ on the shelf?There are some books.A.be B.am C.are D.is考查be动词。句意：架子上有什么？有几本书。What be+表示地点的介词短语提问，be动词只能用is。【典例2】Is there a garden in the yard?Yes,there is.And there _ beautiful flowers in it.A.is so much B.are so many C.is so many D.are so much考查there be句型。句意：院子里有一个花园吗？有，并且里边有很多漂亮的花。flowers为可数名词单数，选用are和many来限定，故答案选B。【典例3】There _ an eraser,two pencils and a knife in the box.A.are B.is C.have D.has考查there be句型。句意：盒子里有一个橡皮，两支铅笔，一个小刀。“某地有某物”选用there be句型；根据“就近原则”，an eraser为单数，选择is。此课件下载可自行编辑修改，仅供参考！此课件下载可自行编辑修改，仅供参考！感谢您的支持，我们努力做得更好！谢谢感谢您的支持，我们努力做得更好！谢谢