At the Sports Shop单数thisthat复数thesethoseoror 还是，或者 用于疑问句或否定句中表示选择关系例如：I don’t have brothers or sisters.Do you like milk or tea?你喜欢这件 T 恤还是那件 T 恤？Do you like this T-shirt or that T-shirt.Do you like this T-shirt or that T-shirt. I like （ want ） this （ that ） one.Do you like these balls or those balls.I like (want) those (these).¥100 yuan$100 dollars
