be eager to 为什么放句首时要省略be

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be eager to 为什么放句首时要省略be
be eager to 为什么放句首时要省略be

be eager to 为什么放句首时要省略be
放在句首不是省略Be动词的原因,是因为此时形容词或者形容词短语作原因状语,跟非谓语动词作状语类似.如果不省略,那句子中岂不是有两个谓语动词?
例如：
She has finished her homework,so she watched TV.一般句
Having finished her homework,she watch TV.非谓语作状语
这虽然是非谓语的例子,但其实语法上有相似处,第二句中不是直接把has放句首,是因为第二句没有连词so,所以要转化成非谓语作状语的形式,所谓非谓语就不是谓语动词.同理,形容词作状语,是肯定不能带上be的,being还说得过去,但是英语语法中没有这样的用法,一般都是直接把形容词放在句首.
例如：
Eager to improve her English,she has to practice English every day.
等同于：As she is eager to improve her English,she had to practice English every day.

举例说明：Eager to buy the coat , he always saves money.
这是高中英语哦。作为状语，一般考试中都会出现这一类问题，老师肯定会教的啦。谓语动词作为主语时的用法

be eager to 为什么放句首时要省略be be eager to 还是be eager for be eager to be eager to do 例句英译中：be eager to do 是be eager to 还是 eager to do sth be eager to do sth 是什么意思 be eager be eager to doing有没有这种说法【高中英语001】be eager to do 什么意思? lazy people are always eager to be doing something. 解释! be eager to do同义短语,尽可能多英语,问：eager to do是形容词短语那么be eager to do是什么短英语,问：eager to do是形容词短语那么be eager to do是什么短语? 用be eager to do sth.和be willing to do sth.造句 be dying to 和be eager to的区别和相同点,需要举例说明 eager to do sth I'm eager to eager to什么意思