私は日本語を５年間勉強している。の英語

I've studied Japanese for five years.

I have learned English for 5 years.

I have been teaching English these five years.

I've studied English for five years.

I have been studying English for five years.

I have been studying English for five years.

I have been studying English for four years.

I haven't spoken English for about 5 years.

I have been studying English for four years.

I have been studying English for six years now.

I studied English for four years.

I've taught English for three years.

I have been studying English for three years.

I have been studying English for five years.

I have been studying English for five years.

I've been learning French for 4 years.

It will be four years since I studied English.

I have studied English for five years―（文章では）―during five years.

I have studied English for five years.

I have been learning English these four years.

I learn English for 5 months.

We will have learned English for five years next year.

I have been studying German for two years.

I study English on my own for a year.

I learned English for seven years.

We have been studying English for three years now.

It's been forty years since I began to study Japanese.

It is forty years since I began the study of Japanese.

We have been studying English for three years.

It is forty years since I began studying Japanese.