My father is good at repairing microcomputers.

This program has become executable.

He believes that he has supernatural powers.

He is still a minor, so he does not have full capacity to act.

He can write sentences using potential verbs.

I am learning how to use the present participle in English.

The present tense is used to express things that are happening now or general facts.

He has already finished writing the report, so we use the present perfect form.

Right now, I am in Tokyo.

We are working on the development and import of new software.