suffer加ing用不用雙寫r

suffer加ing不用雙寫r，suffering

例句

1、

I hate to see animals suffering.

我不忍心看動物受苦。

2、

His trial revived memories of French suffering during the war

他的受審重新勾起了在戰爭中受苦受難的法國人民的回憶。

3、

His school work is suffering because of family problems.

由於家庭問題，他的學業日漸退步。