Question

There are many trees in the hall 改为单数形式的一般疑问句怎么改？

Answer 1

Is there a tree in the hall? 改单数形式的一般疑问句，你可以先把句子改为单数形式的陈述句 There is a tree in the hall.然后再改一般疑问句就一目了然了。

Answer 2

There are many trees in the Hall. 改成单数形式： There is a tree in the Hall.
谓语助动词改成了单数。

Answer 3

There are many trees in the hall.这句话的意思是
大厅里有许多树，它是一个
there be结构的句子，变单数句子的时候，就是把句子当中所有能够变成单数的单词都变成单数，也就是there is a tree in the hall.
一般疑问句就是
Are there many trees in the hall？

Answer 4

there be结构的句式在改成一般疑问句时，应将be提前，这个句子要改成单数时，将句中be动词和名词变为相应的单数形式，具体变法如下:Is there a tree in the hall?

Answer 5

首先，上述句子改为单数形式为
There is a tree in the hall.
改为一般疑问句为，
Is there a tree in the hall?
意为，大厅里有棵树吗？