1.怎么判断 home作名词还是副词?是否要加介词?

1.怎么判断 home作名词还是副词?是否要加介词?
（如arrive home （回家 ,做副词）能否改成arrive at home?
2.need什么时候用动词什么时候做情态动词?
（如 他需要吃早餐,need怎么用 ）
3.turn on ,put on ,get off.此类的动词短语 ,如果加了个宾语it,是放在中间还是放在后面?哪些it只能放在最后?要怎么判断
4.请给我几篇 关于低碳生活或环境保护或世博的英语文章 (80词左右）
5.是不是所有的不及物动词在没有宾语时都不加介词？
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4L的童鞋
1.home就是副词吗 那么your home my home 也是副词吗 be far away from home 中from 不就是介词吗
2.我就是问你要怎么判断 你和我说根据意思来判断不和没说一样么，比如说：后面是直接跟sth.的用动词need，这样才让人听得明白好不好
3.我们老师讲过的，有时候后面的on，off之类的作的是副词，这时候it是绝对不能放在中间的。我只是忘了哪些情况作副词才问的（也许你老师讲的不一样或者你忘了）
4.找篇文章很麻烦？
5.arrive是不及物动词吧 那么 It is the third time for you to arrive late.这句总没错吧
PS：我不知道您说的英语不行的标准是什么 总之我觉得我班里排前三还可以，可能你英语很厉害吧，还有，明天就是中考了，你说的语法书我看我是用不到了。
你说的东西太过含糊有些可能还有误，虽然敲了很多字，不过不好意思，我不能选你为满意答案.

1.home 前一般不加介词,直接就可以说go home~
2.He needs to eat breakfast.
3.一般都说turn it off,it放在中间
4.There are still many problems of environmental protection in recent years.One of the most serious problems is the serious pollution of air,water and soil.the polluted air does great harm to people’s health.The polluted water causes diseases and death.What is more,vegetation had been greatly reduced with the rapid growth of modern cities.
To protect the environment,governments of many countries have done a lot.Legislative steps have been introduced to control air pollution,to protect the forest and sea resources and to stop any environmental pollution.Therefore,governments are playing the most important role in the environmental protection today.
In my opinion,to protect environment,the government must take even more concrete measures.First,it should let people fully realize the importance of environmental protection through education.Second,much more efforts should be made to put the population planning policy into practice,because more people means more people means more pollution.Finally,those who destroy the environment intentionally should be severely punished.We should let them know that destroying environment means destroying mankind themselves.