There be 句型- 2021-02-13 10:28
categories:
- 英语
- 句型
定义
句型由来
主系表语句 -> 倒装句 -> There be句型
(1)主系表
A book is on the desk.
on the desk ->介词短语做表语
A book -> 主语
(2)倒装句
遵循以下倒装原则,将上面的句子进行倒装:
① 方位介词提前
②系动词提前:系动词+主语 形成完全或部分倒装句
A book is on the desk. -> 倒装句 :** On the desk is a book.
(3)There be 句型
On the desk is a book.
这句话 中 on the desk 表语做了主语,这里显得有点头重脚轻,使用There be 作为形式表语再转换一次:
On the desk is a book. -> **There is abook on the desk.**
使用
时态变化
be与其后的主语在人称和数上一致,有时态和数的变化。
- 现在时there is/are..…
- 过去时there was/were..
- 将来时 there will be../there is/are going to be…
- 完成时 there has/have been.
- 可能有 there might be..
- 肯定有 there must be.…/there must have been..
- 过去曾经有 there used to be..…
- 似乎有there seem/seems/seemed to be..…
- 碰巧有there happen/happens/happened to be..…
可替代Be的动词
可用live,stand,come,go,lie,remain,exist,arrive等词代替be动词。
此时还表示存在有,但表意要更具体一些。如:
There **lived/was **an old man at the foot of the mountain.
There **came **a shout for “help”.
There **exists/is **no air on the moon.
There **lies/is **a book on the desk.
There **stands/is **a tree on the hill.