there be+名詞+動詞doing，中文意思是“某處有某人或某物正在做某事”

例如，當我正在公園裡散步的時候，我發現在湖邊一顆樹下有個小女孩正在看書。

While I am walking in the park, I find there is a little girl reading a book under a tree by the lake.

看，河邊有匹馬正在喝水。

Look, there is a horse drinking water by the river.

there be句型表示某地有某物，當主語是不可數名詞時，看成是單數形式，be動詞用is,造三個句子:

1.There is some bread in the fridge.冰箱裡有一些麵包。

2.Is there any rice in the bowl？碗裡有飯嗎？

3.There isn't much water in the river.河裡沒有許多水了。