他有时刷牙用英文怎么说

在英语中，当一个人刷牙时，可以说他 "brushes his teeth"。这个表达来源于英语中的动词 "brush"，意思是用刷子刷洗或擦去某物，并加上介词 "his" 或 "her"，表示这个人的牙齿。

例句：

He brushes his teeth twice a day. (他每天刷两次牙。)
She always brushes her teeth before going to bed. (她总是睡觉前刷牙。)
The dentist told me to brush my teeth after every meal. (牙医告诉我每餐后都要刷牙。)