A few children went home and said, "I'm going to Japan tomorrow, but you don't need to worry, mom, 'cause I'm going to be home at 8 o'clock at night".

有些小孩回家后说：“，我明天要去,日本了，不过妈妈你不要担心，因为我会在8点钟回家。

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And your friend suggests you go to Japan but you went to Japan last year.

你的朋友提议去日本，但是你去年已经去过了。

I've already 课堂 - SpeakingMax英语口语达人

You could use "I've already" pattern to explain why you don't want to go to Japan again.

你可以用“I've already”句型来解释你为什么不想再去日本了。

I've already 课堂 - SpeakingMax英语口语达人