YOU SAID:

The trousers have to be ready this afternoon

INTO JAPANESE

今朝、ズボンは準備ができていなければなりません

BACK INTO ENGLISH

This morning, trousers must be ready

INTO JAPANESE

今朝、ズボンは準備が整っていなければなりません

BACK INTO ENGLISH

Pants must be ready this morning

INTO JAPANESE

パンツは今朝準備しなければならない

BACK INTO ENGLISH

Pants must prepare this morning

INTO JAPANESE

パンツは今朝準備する必要があります

BACK INTO ENGLISH

Pants need to be prepared this morning

INTO JAPANESE

パンツは今朝準備する必要があります

BACK INTO ENGLISH

Pants need to be prepared this morning