2、变化。单数is复数are如:房间里有一张桌。There is a table in the room.树上有很多鸟。There are some birds on the tree.There be选择就近一致原则:There be句型中be动词的单复数形式由最挨近的一项的单复数决定。如:There is a pen, two books and many pencils on the desk.在本句中尽管有钢笔、书和铅笔,但是由于离be动词最近的一项是单数a pen,因此,be动词用单数is。LookandsayThereis/are...fivebo