He's such an ingrate.

他是个忘恩负义的人。

youdao

I will never make friends with such an ingrate again.

我再也不跟像这样忘恩负义的人做朋友了。

youdao

When he found out that I was not improving, he called me an ingrate and a mistake of my parents.

但他发现我没有改进，他把我说成忘恩负义之人并且是我父母的一个错误。

youdao

I've helped him on numerous occasions. Now that I need help, he turned me down ungratefully. What an ingrate.

我帮他无数次，他竟然忘恩负义，在我需要帮助的时候拒绝了我。

youdao

I've helped him on numerous occasions. Now that I need help, he turned me down ungratefully. What an ingrate.

我帮他无数次，他竟然忘恩负义，在我需要帮助的时候拒绝了我。

youdao