連絡する

Okureru toki wa, denwa de renraku shite kudasai.

Please contact us by phone when you are going to be late.

Tomodachi ni mēru de renraku shimashita.

I contacted my friend by email.

Ashita, sensei ni renraku shimasu.

I will contact the teacher tomorrow.

Nanika shitsumon ga attara, watashi ni renraku shite kudasai.

If you have any questions, please contact me.

Isogashikute, kare ni renraku dekimasen deshita.

I was busy and couldn't get in touch with him.

Renraku suru no o wasurete imashita.

I forgot to contact you.