YOU SAID:

the cow said can i have a glass of milk

INTO JAPANESE

牛は、私がミルクを一杯飲むことができると言った

BACK INTO ENGLISH

The cow said I could drink a glass of milk

INTO JAPANESE

牛はミルクを一杯飲めると言った

BACK INTO ENGLISH

The cow said he could drink a glass of milk.

INTO JAPANESE

牛はミルクを一杯飲めると言った。

BACK INTO ENGLISH

The cow said that he could drink a glass of milk.

INTO JAPANESE

牛は牛乳を一杯飲むことができると言った。

BACK INTO ENGLISH

The cow said that he could drink a glass of milk.