A job I would like to do to have. 

A job I would like to do to have would be a Japanese teacher teaching Japanese in an English speaking country. I've been studying English for 3 years and I sometimes talk to foreigners who want to learn Japanese on via Skype. Seeing them improve their Japanese skills makes me really happy, and I realized how much I like teaching my mother language to foreigners. They often ask the difference in meaning between similar words, which I've never thought about before. Therefore, although I'm a native Japanese speaker, I need to study Japanese to gain deeper knowledge so that I can answer their questions.
To be able to a Japanese teacher, you definitely need to understand the Japanese language deeply and correctly. Also, you have to explain well to make your students understand. I'm not good at teaching, but it would be really enjoyable for me to know different cultures through teaching. Furthermore, their attitudes, behavior and values could inspire me.

A job I would like to do

A job I would like to do is to become a Japanese teacher in an English-speaking country. I've been studying English for 3 years and I sometimes, I talk to foreigners who want to learn Japanese on/through Skype. (Sentence can end here) so we do a Since we did the language exchange, Seeing I have seen their them improvements their Japanese skills which makes me really happy. (Sentence end) and Thus I realized how much I would like to teaching my mother-language to foreigners. They often ask me about the differences in/of meaning(s) between similar words, which I've never really thought of about before. Therefore, although I'm a native Japanese speaker, I still need to study Japanese to gain a deeper knowledge so that I can answer their questions.

So to be able in order to become a Japanese teacher, you definitely need to understand the Japanese language deeply and correctly. Also, you would have to explain well give coherent explanations to make your students understand. Although I'm not good at teaching, but it would be really enjoyable for me to know different cultures through teaching. Furthermore, their attitudes, behavior and values could inspire me.

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For sentences, you should cut them shorter if you have 2 commas break in it. That would make it easier to read outloud and it would make the your point become much clearer. Hope I helped, cheers!