最近在努力搞清楚動詞時態該怎麼用，
尤其是過去完成式.
以下句子都是類似意思，
都想表達Tina決定去日本工作這件事。
用了不同寫法，想請問有沒有錯誤？
1)When I met Tina yesterday, she had already made up her mind of
working in Japan.
2)Yesterday Tina told me she had made the decision of
Working in Japan next year.
3)Tina has made up her mind of working in Japan.
4)Tina decided to work in Japan.
謝謝！