YOU SAID:

My watch is broken and i need to fix it before my party next week

INTO JAPANESE

時計が壊れているので、来週のパーティーの前に修理する必要があります

BACK INTO ENGLISH

The clock is broken and needs to be repaired before the party next week

INTO JAPANESE

時計が壊れていて、来週のパーティーの前に修理する必要があります

BACK INTO ENGLISH

The clock is broken and needs to be repaired before the party next week