我去日本！

我和爸爸一起在计划八月去日本的旅行。真開心我快乐！ [more colloquial]
我的日语不好了，我只会说一点儿。
可是，我会说英语。
我也想去中国看一看趟，可是现在我不可以。

看一看 = a glimpse, a glance.

趟 = classifer for trips.  看一趟 = go once to see how things are.

Unlike English, you don't need to use pronouns all the time when the context is clear.  A good example is the following sentence, "Mr. X is rich and he travels often".  Here "he" is clearly who is meant from the context.  It would be considered "incorrect" to replace "he" with "Mr. X" unless the effect is for sarcasm and emphasis.