Be weak in getting on weii

Be weak in getting on weii be weak in 和be weak at do weak in 还是 be weak in? be weak at与be weak in的区别是什么? be weak at对,还是be weak in对?be weak at对,还是be weak in对? be weak in 后动词加ing? be weak/poor at/in是什么意思 be poor in和be weak in的区别 be good at的反义词是be weak/bad at还是 be weak/bad in be good at 的反义短语是什么?要用到weak是be weak in还是at? 不擅长做运动,英语翻译.用be not weak in 英文翻译请教“may be i'm weak in it be weak in后面的动词用什么形式? 与be weak in相对的是哪个词组 be weak in; be weak at 这两个有什么区别?有人说be weak in 后面跟某科目,但是牛津高阶有一例句：Her school report shows that she is weak at/in arithmetic and biology. weak at与weak in的区别 be weak at 还是be weak in 是不是两个都可以(老师好象讲过的),如果2选1,选哪个好? 英语中有be weak at这个词吗?只听过be weak in(老师也是这么讲的,请名师高者解答,急用!