(V/い/な/N だ)かどうか, -

Usage

Sentence pattern for when using a question that includes a question word

忘年会に出席するかどうか、二十日まで返事をください Please reply by the 20th about whether you will attend the year-end party or not

間違いがないかどうか、調べてください Please check wether or not there are any mistakes