@Baggio: Thank you so much for your suggestions and your help. You are right, for example my dictionary just gives me the translation for Earth as the planet, instead for Earth as soil. I even saw the problem in some movies, where the spoken translation is different from the subtitle translation. I hope in my next notebook entries, I will make lesser mistakes, although in chinese class the teachers would hacve said it is right to say 我的很大箱人掌是三年老。I'm so confused sometimes.

@chinafan - That would be helpful. :) But I think you should revisit your basic grammar constructs - for instance, "我的很大箱人掌是三年老。" - this is very European - in Chinese, you can say "I have some cacti I have raised for three years" 我有一些养了三年的仙人掌. In addition, it's important to check that you have used a word correctly - there are many words that translate to what you want to say in your native language but makes no sense in the target language. For example, in English, we can say "to water plants", but you can't translate this to "给它们水" in Chinese, the proper term is "浇水“. Another example is "earth" - in Chinese, the planet Earth is "地球", whereas earth, as in dirt or soil is "土壤" or ”泥土“. To check the precise meaning and / or nuances of a word, I suggest baidu's dictionary - they have some excellent sentences and translations. Good luck. :)

:)