拖鞋用英语写作文时，通常使用单词 "slipper"。例如：

1. She spent the morning padding about the house in her slippers.

2. A New Type of Hydrostatic Slipper Bearing and its Application to Water Hydraulic Motor.

3. His father meted out punishment with a slipper.

如果需要指代一双拖鞋，可以使用复数形式 "slippers"。例如：

1. She put on her cozy slippers.

2. They are a pair of comfortable slippers.

此外，如果需要描述特定类型的拖鞋，可以使用其他词汇，例如 "flip-flops"（人字拖）或 "lazy mop slippers"（懒人擦地拖鞋）。例如：

1. She wore her flip-flops to the beach.

2. I bought a pair of lazy mop slippers to save time cleaning the floor.

希望这些信息对你有所帮助。