Do you know if she plays guitar?请问这是问：“你知道她是否会弹吉它吗?” 还是“你知道她是否在弹吉它吗?”if 当什么讲?plays又当什么讲?如果把句子变成过去式(简单点的变成过去式意义的句子)

Do you know if she plays piano这里的 if 当什么讲呢 do you know she对吗 If you know what will you do But you all do not together so ,even if she know again how 这句话 Do you know who is she? Do you know if she ()tomorrow.If she (),I'll call youA.comes,isB.comes,will beC.will come,isD.will come,will be 请教这个句子.do you happen to know if she left a message?do you happen to know if she left a message?有点难理解这句话,happen to的用法求指教. do you know where suger is p--- Do you know if she's plays the piano?这里plays 是她会弹,还是她弹过没有. 将you message know to left happen if Do she a连词成句速求答案,老师们·,拜托了· where did she buy her shoes do you know?do you know [ ]she [ ]her shoes? 动词填空1、-Do you know if Sandy will go there?-I‘m not sure.She says she will stay at homeunless she _____(invite)to the party 句子不理解do you know if you have enough money? Do you know ___ she could pass the exam?-Sorry ,I've no idea.Do you know ___ she could pass the exam?-Sorry ,I've no idea.A if B how Do you know ________ back soon?A．when she will come B．if she will come 此题应该选什么?为什么? i do not know (come) if she to attend the meeting tomorrow .if she（come）please let me know Do you know if ____back next week?If he ___ back,please let me know.为什么 Do you know if the man is badly ill 翻译