YOU SAID:
i babysat for my neighbor yesterday
INTO JAPANESE
私は昨日隣人のためにbabysatしました
BACK INTO ENGLISH
I did babysat for my neighbor yesterday
INTO JAPANESE
私は昨日隣人のためにbabysatをしました
BACK INTO ENGLISH
I did babysat for my neighbor yesterday
Come on, you can do better than that.