I want to add about ごちそうさま.

We say ごちそうさまでした after we eat, but also when someone treats you food or drink.

This shows gratitude toward the person who paid for the meal/drink.

It is hard to come up with aizuchi words when you think about it.

What I have come up with is as follows;

 

tashikani = certainly

naruhodo = understood, interesting...

soudesune = I understand, I see..

 

But what you say the most is "hai", "ee" or "un" depending on how casual/formal conversation is.

今TVで放映しているのでは『アルスラーン戦記』が好きです。

アルスラーンが主人公ですが、とてもかわいらしいと思います。

あと『俺物語』も人気があるようです。

Sorry, but I think your question is too vague to answer. I think if you are asked the same thing about English, your would be puzzled too?

de (で) is often used to specify places. (e.g.at) For example, I met with him at the store, would be; 私は彼と店で会った わたしは　かれと　みせで　あった watashi wa kare to mise de atta Also it is used to specify tool. (e.g.with) For example, I drew a picture with the color pencil, would be; 私はその色鉛筆で絵を描いた わたしは そのいろえんぴつで えを かいた watashi wa sono iroenpitsu de e wo kaita I hope it helps.