YOU SAID:

Dad had to put his tea down because he couldn't do it with his right thumb

INTO JAPANESE

お父さんは自分の右手の親指ではできなかったのでお茶を飲まなければならなかった

BACK INTO ENGLISH

Dad was unable to do with his thumb with his right hand, so he had to drink tea

INTO JAPANESE

お父さんは右手で親指を使うことができなかったので、お茶を飲まなければなりませんでした

BACK INTO ENGLISH

Dad was unable to use his thumb with his right hand, so he had to drink tea

INTO JAPANESE

お父さんは親指を右手で使うことができなかったので、お茶を飲まなければなりません

BACK INTO ENGLISH

Dad was unable to use his thumb with his right hand, so he must drink tea

INTO JAPANESE

お父さんは右手で親指を使うことができなかったので、彼はお茶を飲まなければなりません

BACK INTO ENGLISH

He was unable to use his thumb with his right hand, so he must drink tea

INTO JAPANESE

彼は右手で親指を使うことができなかったので、彼はお茶を飲まなければなりません

BACK INTO ENGLISH

He could not use his thumb with his right hand, so he must drink tea

INTO JAPANESE

彼は親指を右手で使うことができなかったので、お茶を飲まなければならない

BACK INTO ENGLISH

He was unable to use his thumb with his right hand, so he had to drink tea

INTO JAPANESE

彼は右手で親指を使うことができなかったので、お茶を飲まなければなりませんでした

BACK INTO ENGLISH

He was unable to use his thumb with his right hand, so he had to drink tea