There is a book on the desk.
桌上有一本书
这句话的主语是:a book
构成:There be ...句型表示的是 “某处有(存在)某人或某物”,其结构为There be(is,are,was,were )+名词+地点状语.例如:
There are fifty-two students in our class.
There is a pencil in my pencil-case.
There was an old house by the river five years ago.
特殊疑问句:
There be句型的特殊疑问句有以下三种形式:
对主语提问:当主语是人时,用 “Who’s + 介词短语?”;当主语是物时,用 “What’s + 介词短语?”.其中there在口语中常常省略.注意:无论原句的主语是单数还是复数,对其提问时一般都用be的单数形式(回答时却要根据实际情况来决定).如:
There is a bird in the tree.→What’s in the tree?
There are some bikes over there.→What’s over there?
There is a little girl in the room.→Who is in the room?
不明白的再问哟,请及时采纳,多谢!