英语语法结构问题We were interested in the extent to which ocular drift and, particularly, ocular microtremor are due to central drives tending to synchronise extraocular muscle unit discharge at particular frequencies.上面这句话中,to wh

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英语语法结构问题We were interested in the extent to which ocular drift and, particularly, ocular microtremor are due to central drives tending to synchronise extraocular muscle unit discharge at particular frequencies.上面这句话中,to wh
英语语法结构问题
We were interested in the extent to which ocular drift and, particularly, ocular microtremor are due to central drives tending to synchronise extraocular muscle unit discharge at particular frequencies.
上面这句话中,to which, tending to, discharge 都是什么语法结构啊?

英语语法结构问题We were interested in the extent to which ocular drift and, particularly, ocular microtremor are due to central drives tending to synchronise extraocular muscle unit discharge at particular frequencies.上面这句话中,to wh
to which 引导的是定语从句,介词to是因为to the extent,tending是分词短语作定语,discharge是动词原形.

主语是we这个没问题了吧。
谓语是need,需要
to know不定式做need的宾语
而what others are doing这个句子(宾语从句)又做了宾语中的know的宾语。
呵呵,是不是有点儿晕?为什么宾语后面还会冒出来了另一个句子做宾语呢?在这里多说几句
在英语里,一个句子一般只能有一个谓语动词(连动式除外,这个句子显然不是连动式),但...

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主语是we这个没问题了吧。
谓语是need,需要
to know不定式做need的宾语
而what others are doing这个句子(宾语从句)又做了宾语中的know的宾语。
呵呵,是不是有点儿晕?为什么宾语后面还会冒出来了另一个句子做宾语呢?在这里多说几句
在英语里,一个句子一般只能有一个谓语动词(连动式除外,这个句子显然不是连动式),但是,有的时候会出现这样的情况,一个动词的宾语偏偏也是一个动作,需要一个动词来完成句子,比如像你这个句子,我们需要什么呢?需要“知道”,知道也是一个动作,可是一个句子又只能有一个谓语动词,这怎么办呢?于是我们在第二个动词(也就是知道)的前面加点小东西,让它变成一个类名词的结构来做宾语(我们知道,动词是不能给另一个动词做宾语的),于是,我们在know前面加上了to变成了to know(也就是传说中的不定式).这个时候,to know在语法上就具有了名词的功能(有类似功能的还有动名词,即动词后加ing,不过在need这个词后,有固定的用法只能跟不定式做宾语),但是,我们知道,know的前面虽然加了个小东东,但它本身还是有动词的属性的哦.所以,在这里,know的变身其实并不彻底,它在to的掩护下同时具备了名词和动词的两个功能,作为名词,它做了need的宾语,可是做为动词的那一部分属性让它可以在后面再接宾语,于是,就出现了句子中的what others are doing这个句子做know的宾语从句的情况。
嘿嘿,说了一堆,也不知道你听懂没有。不过,我给我学生这么讲,他们都表示可以接受。
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