初一英语需要补充的一个重要句式就是Therebe句型

　　一、There be句型
　　I. 定义与概念
　　定义：人或事物的存在，there作为引导词，无实际意义。There be句型属于倒装结构。
　　II. There be句型的转换
　　1、 否定句：在be动词后面加no或者not
　　I、关于no的否定：no后面可直接加名词
　　There is no water in the bottle.
　　There are no apples on the table.
　　II、关于not的否定：not后面不能直接加名词，必须要接冠词或形容词来修饰。
　　There isn’t a box in the room.
　　There are not any pens on the desk.
　　2、 疑问句：将be动词，助动词或情态动词提前，回答用yes或no，后接简单答语。
　　Is there a cake on the table?
　　Yes, there is. / No, there isn’t.
　　Will there be a party tonight?
　　Yes, there will. / No, there won’t.
　　III. 课堂过手练习
　　There ___ ___ boats on the lake. (否定句)
　　There ___ ___ ___ boats on the lake. （否定句）
　　There is some rice in the bag.
　　（改为一般疑问句）_______________________________
　　Ⅳ. There be 句型的两大原则
　　1、主谓一致：当be动词后所接名词是可数名词单数形式或不可数名词时，be应使用单数；当be动词后所接名词是可数名词复数形式时，be应使用复数。
　　There is a man at the door.
　　There is some milk in the cup.
　　There are many people in the classroom.
　　2、就近原则：当be动词后面有几个并列名词做主语时，动词be的形式和最靠近它的那个名词保持数的一致。
　　There is a pen and two books on the desk.
　　There are three singers, five workers and a teacher on the playground.
　　课堂知识过关
　　There _______ (be) two thousand students in our village.
　　There _______ (be) a writer and singer in our school last week.
　　There _______ (be) sheep and goats on the hill yesterday morning.
　　There _______ (be) some food in the box.
　　There _______ (be) five hundred dollars to pay.
　　There _______ (be) still another 20 miles to drive.
　　Ⅴ. There be 句型的时态
　　注意be动词的变化形式
　　There are some strangers in the street. （一般现在时）
　　There was a football match in our school yesterday. （一般过去时）
　　There stands a big tall apple tree in front of my house. （对其他动词的变形）
　　Once there lived an old fisherman near the sea. （对其他动词的变形）
　　There will be a meeting in three days.(一般将来时）
　　【过手知识过关】
　　Look! There _______ (come) the No.7 bus.
　　Once there _______ (live) some hard-working people in the forest.
　　_______ there _______ (stand) a statue (雕像) by the sea?
　　2、与情态动词连用：有时根据表达需要，可适当用些情态动词如can, may, must等，
　　构成There+ may/must/can/will +be
　　There must be something wrong with the computer.
　　There may be a meeting in the evening.
　　Ⅵ. There be与have的比较
　　1、区别：There be句型意为存在，强调某地有某物，不表示所属关系；而have表示所属关系，强调某人或某地有某物。
　　There are some trees in front of the house.
　　I have many friends in China.
　　2、相同点：在表示结构上的含有时，两者都可以用。
　　There are many long rivers in China. / China has many long rivers.
　　How many days are there in May? / How many days does May have?
　　特别要注意：没有there have 这样的结构。