没有 did use to 只有问句 did you use to + 动词 你曾经经常.过没有?
是问他曾经经常在哪里游泳过的意思.
used to 是 usually did do something 的意思
when did he use to get up? 他曾经经常几点起床?
跟 when/what time did he usually get up? 一样
he used to get up at seven o'clock. 他曾经(经常/每天)7点起床.
没有 did use to 只有问句 did you use to + 动词 你曾经经常.过没有?
是问他曾经经常在哪里游泳过的意思.
used to 是 usually did do something 的意思
when did he use to get up? 他曾经经常几点起床?
跟 when/what time did he usually get up? 一样
he used to get up at seven o'clock. 他曾经(经常/每天)7点起床.