YOU SAID:

I think the president is not capable of doing his job

INTO JAPANESE

大統領は彼の仕事を行うことができると思います

BACK INTO ENGLISH

I think he can do his job

INTO JAPANESE

私は彼が彼の仕事を行うことができますだと思う

BACK INTO ENGLISH

I think he can do his work

INTO JAPANESE

私は彼が彼の仕事を行うことができますだと思う

BACK INTO ENGLISH

I think he can do his work