I would also say you should change "culture" to "cultural," so "I'm going to enjoy a cultural trip there," but in general the sentence is worded somewhat strangely. A more native way to say it would be "I'm looking forward to the cultural trip." or "I'm looking forward to experiencing the culture there." Are you talking about a vacation?

Here is a pretty extensive list: http://en.wiktionary.org/wiki/Appendix:English_idioms I think the average native English speaker probably knows about half of these, maybe more?

The meaning is similar to "see you later" but it suggests that you and the speaker often go to similar places. For example, if you go to the same school or are in the same company or live in the same neighborhood, it means "I'll see you around the school" or "I'll see you around the company" etc. Hope that helps. :)

Are you talking about native speakers with different accents or people learning my language as a second language? Generally I'd say it depends on how different the speaker's accent is from what I'm used to. I think I could understand most educated people from the United States or cities in England and Africa and Australia and India, but people from more rural parts of other countries might be harder for me to understand. And second language learners are a whole different story. I generally understand Chinese and Indian people well if they're speaking in English, but some Eastern European accents are hard for me to understand.

A generic way to ask is just "Are they the same?" or "Are they the same thing?" Your two examples are kind of unusual though. You would be able to tell if two books are the same by the title, and you wouldn't like a book unless you had read it. Additionally correct ways to write your questions would be as follows: - I like this book and that book. Are they the same book with difference cover? ------> I like this book and that one. Are they the same book with different covers? - I like these two car. I think they are same model with difference color. Are they the same model? ------> I like these two cars. I think they are the same model in different colors. Is that true? Generally speaking you should not repeat the same sentence in question form-- it just sounds strange. A few other examples of asking if things are the same: -- Are these shirts the same size? -- Are we talking about the same person? -- Is he going to the same place? Etc.

i can understand how this sentence can be confusing-- as Karen and Aldrin have mentioned "its" is a possessive pronoun representing the package. however, the package is not a living thing, and we usually only use possessive pronouns with living things, which may be causing some of your confusion? as for why it isn't "the package is on going the way,"-- when you use the construction 'on the way,' you don't use a verb with it. so if you say 'i'm on the way,' you would never say 'i'm on going the way.' i'm not sure if there is a rule about this that i don't know as a native speaker, but i hope that helps!