是at the weekend 还是用in?还是其他的~

是at the weekend 还是用in?还是其他的~ 我经常在周末去爬山I often go climbing ()the weekend在周末是in the weekend,还是at the weekend 讲明原因 我们说 on weekend ,at weekend,还是in the weekend 在周末用英语怎样表达是at the weekend 还是 on the weekend 二者有什么区别吗? 是 What do you do at the weekend 还是What do you do on the weekend 在周末是用at the weekend还是on the weekend?小学课本用on,初中课本为什么又用at? i don't go to school on saturday or sunday,改为同义句用at the weekend还是 on weekend谢谢详解 on the weekday还是on weakday at还是in the weekend 还有以上的weekend weekday 用加s么 是in the weekend还是at the weekendsrt,我们老师讲的是at,但是刚刚用在线翻译说是in the weekend,而且还没有加s,那个是正确的,求指导 and后面的动词用原形还是加ing?书上有一句是I used to play tennis a lot and go for long walks.另一句是I stopped playing tennis and going for long walks at the weekend . weekday 和weekend用on还是at at the weekend造句 at the weekend同义词 是 in the weekend 还是 on thr weekend 如题. 应该用on the weekend 还是 in the weekend? in/on/at this weekend是in this weekend,on this weekend还是at this weekend in on at 关于时间的用法在下周 next week 前的介词用哪个 英语在周末应该是on the weekend 还是 at the weekend,并请说明原因. on the weekend or at the weekend