YOU SAID:

I have come to make an announcement: Hewwo, everypony, bazinga!

INTO JAPANESE

私は発表をするために来ました：ヒューウォ、エブリポニー、バジンガ！

BACK INTO ENGLISH

I came to make the announcement: Huwo, Everypony, Bazinga!

INTO JAPANESE

私は発表をするようになりました：Huwo、Everypony、Bazinga！

BACK INTO ENGLISH

I started making announcements: Huwo, Everypony, Bazinga!

INTO JAPANESE

私は発表を始めました：Huwo、Everypony、Bazinga！

BACK INTO ENGLISH

I have begun to announce: Huwo, Everypony, Bazinga!

INTO JAPANESE

私は発表し始めました：Huwo、Everypony、Bazinga！

BACK INTO ENGLISH

I started to announce: Huwo, Everypony, Bazinga!

INTO JAPANESE

私は発表し始めました：Huwo、Everypony、Bazinga！

BACK INTO ENGLISH

I started to announce: Huwo, Everypony, Bazinga!