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1、there be 句型的单数形式：句型的单数形式： There is + a / an 名词+地点观察句子，找规律。观察句子，找规律。陈 述 句：There is an apple on the tree.一般疑问句：Is there an apple on the tree?陈 述 句：There is a ruler in the desk.一般疑问句：Is there a ruler in the desk?变化规律变化规律一调，二改，三问号！一调，二改，三问号！一调：一调：调整调整be动词的位置，放到句子开头。动词的位置，放到句子开头。二改：二改：改变字母大小写（新的首字母改为大写，改
2、变字母大小写（新的首字母改为大写，而放到后面的原首字母变为小写）。而放到后面的原首字母变为小写）。三问号：三问号：句子标点由句号改为问号。句子标点由句号改为问号。There is an apple on the tree.一调，二改，三问号！一调，二改，三问号！is There an apple on the tree.Is there an apple on the tree.一调一调二改二改三问号三问号Is there an apple on the tree？Practice 1There is a book on the table.Is there a book on the tab
3、le?（把陈述句改为一般疑问句。）回答方式回答方式 Is there an apple on the tree？肯定回答：Yes, there is.否定回答：No, there isnt.Practice 2Is there a dog in front of the box?（根据图片回答问题。）Yes, there is.Is there a ball under the desk?No, there isnt.Task (小任务小任务)Rearrange the words. (句子排序) a, classroom, Is, the, there, picture, in. _?2. box, there, in, the, ball, Is, a ._?