彼は日本を理解させるのに非常に力があった。の英語

He was greatly instrumental in making Japan understood.

He was very proficient in Japanese.

He was very good at Japanese.

He doesn't know a lot about Japan well.

He doesn't know a lot about Japan.

He doesn't know much about Japan.

I couldn't teach them about Japan well.

He was speaking Japanese very well.

He was speaking very fluently in Japanese.

He spoke in Japanese so that I could understand.

He always wanted to study Japanese.

He can speak Japanese now.

They can speak Japanese very well.

He studied Japanese eagerly.

Apparently, John can understand a little Japanese.

He understands the structure of Japanese language and people a little.

He may not understand Japanese.

To understand Japanese culture to the full, you should learn the language.

He's very much interested in the Japanese language.

He has a great interest in Japanese.

He's very interested in Japanese.

Jane does not speak Japanese well.

Apparently, John can speak a little Japanese.

He teaches them how to speak Japanese.

During his seven years in Japan, he studied Japanese in earnest.

He's very much interested in the Japanese language.

He has a great interest in Japanese.

He's very interested in Japanese.

John speaks Japanese very well.

The longer he stays in Japan, the better his Japanese gets.