英语语法问题,怎样都想不通啊T-T

英语语法问题,这几道有点想不通 几道打死都想不通的概率问题 英语语法问题：关于“你还没告诉我”用haven't和didn't分别都怎么去造句?还有区别有吗? 英语语法问题,Don't let's do it,()() 英文问题她脑子就是转不过这弯来,（就是想不通）可以这么说吗?she can't just wrap her head a 速度V的大小与运动的位移X和时间T都无关.请解析一个这个结论,实在想不通. 用不定式代替从句部分,例：i don't know what to do.我觉得从什么解释都解释不通啊,怎么能这样用呢? 求问一个英语语法题T T 两个简单的英语语法问题,I don't know和I didn't know有什么区别额? 英语语法问题I didn't know you were her mother和I didn't know you ar 英语语法问题I don't know which I should buy和 I don't know which on 英语语法问题rich as he is,he isn't happy能否写成as he is rich,he isn't