YOU SAID:

I am in desperate need of sleep.

INTO JAPANESE

私は必死に睡眠を必要としています。

BACK INTO ENGLISH

I desperately need sleep.

INTO JAPANESE

私は必死に睡眠が必要です。

BACK INTO ENGLISH

I need sleep desperately.

INTO JAPANESE

必死に睡眠が必要です。

BACK INTO ENGLISH

I need sleep desperately.