存在句:又叫做“There be句型”,是一种表示“存在”的句式。
常见结构:“There + be + 主语 + 地点状语(或时间状语)”。存在句的“there”要弱读。
存在句的句型转换:
一. 肯定陈述句
例如:There is a dictionary on the desk.(桌子上有一本字典。)
二. 否定陈述句
例如:There isn’t a dictionary on the desk.(桌子上没有字典。)
三. 一般疑问句
例如:Is there a dictionary on the desk?(桌子上有一本字典吗?)
四. 特殊疑问句
例如:How many dictionaries are there on the desk?(桌子上有几本字典?)
What’s there on the desk?(桌子上有什么?)
五. 反意疑问句
例如:There is a dictionary on the desk, isn't there?(桌子上有一本字典,是吗?)
存在句的谓语动词和助动词连用:
例如:There have been many accidents in the past few weeks.(过去几个星期里发生了几个事故。)
存在句的数:在存在句中,只要紧靠“There be”的第一项不是复数,其谓语动词便可用单数形式。
一. 单数
例如:There was a dictionary, some pictures books and some magazines on the desk.(桌子上有一本字典,几本图画书,还有一本杂志。)
二. 复数
例如:There are two books on the desk.(桌子上有两本书。)
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