几个英语问题

1.Physics,phycial这两个词的区别和用法,比如说,物理老师,/实验/实验室/变化等等改用哪个词?以及Chemistry,Chemical,这两个词的用法和区... 1.Physics,phycial这两个词的区别和用法,比如说,物理老师,/实验/实验室/变化等等改用哪个词?
以及Chemistry,Chemical,这两个词的用法和区别,一些常用的搭配等等.EG:老师,/实验/实验室/变化/考试等等.

2.Some of my classmates were late for school because of _____.
A.some heavy traffics B.the crowded traffic
C.heavy traffic D.a heavy traffic
为什么不能用B?要选C?希望给我分析一下每个选项.

3.The ______ are big and bright in our school.
A.classroom's windows B.windows of the classrooms
C.classroom's windows D.windows of the classroom's
为什么不能用C要选B?我双重所有格搞不大清楚,希望给我详细讲讲.谢谢!比如a friend of my father还是father's?
4.Wei Hua is a kind girl.She has been _______.
A.many helps B.a great help
C.a large number of help D.a lot of help
为什么不能选D要选B?help作名词时可数嘛?a lot of不是既可以修饰可数又可以修饰不可数吗?
5.Look,these postmen are____,those waiters are ____.
A.Japanese,Germen B.Japanese ,Germans.
C.Germans ,Japaneses D.Germen,Japanese
为什么选B? 不选C?Japanese不能加S的吗?哪些国家的人可加S?哪些不加?
哪些国家的人要加man的?比如English能表示这个国家的人吗?
是不是一定要加man,还是French要加MAN吗?

希望详细回答啊! 展开

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