一些英语语法题when the fire broke out ,...为什么是the house was made empty而不是the house was emptying.The scientific study of the motion of bodies and the action of forces that change or cause motion .dynamics.为什么是is called 而

一些英语语法题when the fire broke out ,...为什么是the house was made empty而不是the house was emptying.The scientific study of the motion of bodies and the action of forces that change or cause motion .dynamics.为什么是is called 而
一些英语语法题
when the fire broke out ,...为什么是the house was made empty而不是the house was emptying.The scientific study of the motion of bodies and the action of forces that change or cause motion .dynamics.为什么是is called 而不是called 这里的is 不会与前面的change和cause同样是谓语而重复么?Some form of physical education.by all people and nations.这里为什么是has been practiced而不是have been practiced

一些英语语法题when the fire broke out ,...为什么是the house was made empty而不是the house was emptying.The scientific study of the motion of bodies and the action of forces that change or cause motion .dynamics.为什么是is called 而
when the fire broke out ,...为什么是the house was made empty而不是the house was emptying.
当火灾发生时,根据句义应该是房屋被清空了,应使用被动态,when引导的时间状语从句是一般过去时态,所以主句也应该使用一般过去时态.屋子被清空的动作不是过去正在进行的.
The scientific study of the motion of bodies and the action of forces that change or cause motion is called dynamics.为什么是is called 而不是called 这里的is 不会与前面的change和cause同样是谓语而重复么?
首先要明白句子的主干.整句的意思：对身体运动和改变或者引起位移的力的作用的科学研究被称为动力学.通顺一点讲是：动力学研究力和物体为何在运动.that是引导词,引导了一个定语从句,定语从句的先行词是the action of forces,定语从句的谓语是change or cause,使用被动态是因为根据句义是被称为,有被动的意思.
Some form of physical education.by all people and nations.这里为什么是has been practiced而不是have been practiced
这里的疑问在于使用复数的谓语还是单数形式的谓语,而谓语的选择在于看主语是单数还是复数,本本句子的主语是Some form of physical education（体育教育的某种形式）,主语是单数,故选用单数形式的谓语has been practiced（选用现在完成时表示到说话时为止（或到现在为止）已经发生或完成了（不一定结束）的动作或状态.强调的是这一动作与现在的关系.）

when the fire broke out ,...为什么是the house was made empty而不是the house was emptying.
答：make the house empty 中，empty是形容词作宾语the house的补足语，意为：使房子变成空的。 The house was made empty. 是被动语态，一般过去时态。
是的，emp...

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when the fire broke out ,...为什么是the house was made empty而不是the house was emptying.
答：make the house empty 中，empty是形容词作宾语the house的补足语，意为：使房子变成空的。 The house was made empty. 是被动语态，一般过去时态。
是的，empty也可以作及物动词，意思是“ 使。。。变成空的”，它后面应该有宾语，且主语常为人。如：
He emptied his glass.
他使杯子成空((喝光杯中物))
the house was emptying ,后面缺宾语，主语the house也难发出这个动作，所以是错的。
如改成the house was empty, 倒是一个很好的句子：
译：当火灾爆发时，房子是空的。
比原句更好。当火灾爆发时，房子被清空。（我怀疑是否来得及！）
The scientific study of the motion of bodies and the action of forces that change or cause motion ....dynamics.为什么是is called 而不是called 这里的is 不会与前面的change和cause同样是谓语而重复么？
答：
The scientific study of the motion of bodies and the action of forces that change or cause motion is called dynamics.
对物体运动及改变或引起运动的力的作用的科学研究叫做动力学。
句子结构是：The scientific study of A and B (带一个定语从句）is called dynamics.
就是对 A和B的科学研究被称作动力学。
其中A=the motion of bodies 物体运动
B=the action of forces 力的作用
forces 力有一个定语：that change or cause motion 改变或引起运动的
is called和 change or cause 确实都叫作谓语，但是档次是不一样的。前者是主句的谓语，后者是从句的谓语
Some form of physical education....by all people and nations.这里为什么是has been practiced而不是have been practiced
答：你注意到没有some后面的这个form没有加S呢？
其实some不仅可以跟可数名词的复数，如some students, 可以跟不可数名词如some water,
还可以跟可数名词的单数，表示“某个” （不熟悉的人或事物）如Some man is waiting for you at the school gate. 校门口有个男的在等你。

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when the fire broke out ,...the house was made empty中 empty是形容词作主补.
可以是 the house was empty形容词作表语
The scientific study of the motion of bodies and the action of forces that change or cause m...

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when the fire broke out ,...the house was made empty中 empty是形容词作主补.
可以是 the house was empty形容词作表语
The scientific study of the motion of bodies and the action of forces that change or cause motion ....dynamics.主语是The scientific study 所以是is called 前面的change和cause是定语从句中的谓语
Some form of physical education....by all people and nations.这里主语是Some form 是三单所以是has been practiced而不是have been practiced

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