My name is Tanaka.

I am studying Japanese.

We are going on a trip together.

A back vowel is a vowel that is pronounced at the back of the mouth.

He locked the door and shut us out.

He checks the locking up of the house every night.

He launched a project to provide educational opportunities for children in developing countries.

A back vowel is a sound where the back of the tongue approaches the palate.

Please shut the window.

Kouke is my best friend.