YOU SAID:
I gave birth to six children last Sunday, four of which have to sleep in the basement.
INTO JAPANESE
私は先週の日曜日に6人の子供を出産し、そのうちの4人は地下室で寝なければなりません。
BACK INTO ENGLISH
I gave birth to six children last Sunday and four of them have to sleep in the basement.
INTO JAPANESE
私は先週の日曜日に6人の子供を出産し、そのうちの4人は地下室で寝なければなりません。
BACK INTO ENGLISH
I gave birth to six children last Sunday and four of them have to sleep in the basement.
That didn't even make that much sense in English.