Do you know if ____back next week?If he ___ back,please let me know.为什么

If you know what will you do 句子不理解do you know if you have enough money? 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 Do you know ----------he will be back.that或if, Do you know if they ______(play)basketball next time. can you tell me if...Do you know if ...I'd like to know if...三者如何区别can you tell me if...Do you know if ...I'd like to know if...这三者如何区别,如何使用? Yes But if you know you will do it.I think you can do well I love you ,Do not know if you can do for you,Thanks i do not know if you _____.if you ____,please call me tonight(come) do you know that he is right?和do you know if he is right?哪个正确?为什么? -Do you know if they ____on a picnic?-If the weather ___fine tomorrow,they will. Do you know if she plays piano这里的 if 当什么讲呢 do you know if he will come为什么if后面用将来时如题,急 you know.I need you If you do not leave,I do not discard.Do not leave so ,as you know,if you beliebe ,you can do it If you should change your mind,do let me know中的do什么意思 if you know an earthquake is coming ,what will you do?