ヶ月

約１ヶ月です。

It's about one month.

彼女は妊娠８か月だ。

She is eight months pregnant.

病気になって１ヶ月後(ご)には彼(かれ)は死んだ。

One month after he had become ill, he died.

彼(かれ)女は３か月前(まえ)に彼(かれ)に会ったと言った。

She said that she had met him three months before.

僕(ぼく)が彼女に会ってから３ヶ月がたちました。

It's been three months since I met her.