【英語】復習 ～しようとも/～いつでも・どこでも

no matter ～へ言い換え可能。

Whoever comes, I won't open the door.
No matter who comes, I won't open the door.

Whatever happens, I'll do it.
No matter what happens, I'll do it.

Wherever you are, you must sleep.
No matter where you are, you must sleep.

Whenever I phone her, she is out.
No matter when I phone her, she is out.

However tired you are, you clean it.
No matter tired you are, you clean it.