there are three people in her house 怎样改为单数形式?

there are three people in her house 怎样改为单数形式? There are three tables in the classroom.（改为单数形式） there are three bikes near the tree改为单数形式 There are many children in the park.改为单数形式 are there any eggs in the box?改为单数形式 Those are her photos改为单数形式~ 翻译：How many people are there in her family?Three.Her husband There are some photos,改为单数形式 There are English books.(改为单数形式) 1.There are three people behind the house.2.The girls in the There are three people in her family ,they are my father ,my 句型转换 [1There are some chairs in the room.改为单数形式 There()()()i