If he comes ,please let me know_____ _____ _____ _____(尽快)

Please tell us if he comes here同义句转换Please ( ） us( )if he comes here. If he comes bacK,please let me know.为什么不用If he will come back I really do not know if he ( ),if he ( ),please tell me.A .will come,will come B .comes,comes C .will come,comes D .comes,will come If he comes ,please let me know_____ _____ _____ _____(尽快) Do you know if ____back next week?If he ___ back,please let me know.A.he comes; will comeB.he comes; comesC.he will come; comesD.he will come; will come 选什么,并解释为什么, 如,Do you know if he will come back next month?if he comes back,please let me know?语法点是什么? 谁给我简单讲下IF条件句I don’t know if Jack .If he ,call me,please.A.will come; will comes B.comes; comeC.comes; will come D.will come; comes A moment,please．I'm checking if Mr.Smith _________ free tomorrow．A．is B．being C．to be D 1.I w if he comes here. I wonder if he__this evening .If he comes,would you please call me?A is comingB comesC would comeD has come选什么 If he comes back,please let me know.如果他回来了,请通知我.（从句中的谓语动词用comes back,表示一般将来时,决不可用will come back）comes back,是一般现在时?为什么come加s 请说明为什么.i dont know if Peter （）tomorrow,if he （）,please call me right now.选项a,will come,will come .b ,comes,wil come.c,will come,comes.l 一道英语选择题,请给出答案并说出理由I don't know if Jack will come .If he (.),call me,please.A.will comes B.come C.will come D.comes Please tell me if he_____(come)tomorrow.老师说if表“是否”,只能填will come；这里的if不能表示“如果”,所以也不能填comes,好像是因为tell是接双宾语什么的.可是Please tell me if he comes tomorrow.“me”是sb., 英语：if he ——,please tell me as soon as possible.中是填will come还是comes?原因?不是主将从现吗?if he ——,不是主句吗? I don't know if he will ___（come）back.If he___（come）please tell me答案是will come,comes为什么是I don't know if he will comes?这里为什么要用将来时?还有为什么后面那个if引导的句子又不用将来时了? Please call me if he _____tomorrow. If he comes back,please tell him to ___me___.He can call me___0514-88181191A.call;in;at B.call;on;on C.call;back;on D.call;at;at I don't know if he __tomorrow.if he ___piease let me know.A.comes,comes B.will come,comes C.will come,will comewhy?