If he doesn't come to work,he may be fired.Surely he isn't so foolish_____not to realize that.（A)so (B)and (C)but (D)asThey_____us since five o'clock this morning.(A)are helping (B)have beng helping (C)have beng helped (D)have helpedOur next meetin

If he enjoys concerts,why doesn't he come with us?为什么用 doesn't 用won't if he 什么come tomorrow ,i will call you 是doesn‘t还是won’t?为什么? I don't mind _____ if he doesn't come中文翻译一下谢谢 1-16why hasn't he come?( )on time,we will have to put off the trip.1.if he doesn't come2.if he won't come3.if he shouldn't come4.if he hadn't come If he _____busy tomorrow,he will come.A.won'tB.isn'tC.doesn'tD.don't he doesn't need to come if he feel sick为什么是doesn't need to come 而不是needn't to come讲清为什么或语法知识重点说明为什么doesn't need to come He'll come ( ) it doesn 't rain tomorrow.He'll come ( ) it doesn 't rain tomorrow.A.after B.while C.when D.if 用without改写句子If he doesn't come,I will go swimming alone He _____ to the meeting if he has to look after his sick mother.A.needn‘t to comeB.doesn’t need to comeC.doesn‘t need come [Since,If]he doesn't come,I won't come[too,either].He asked me[since,if]I would go there with him. I’m waiting for Jack ________, I will go swimming alone.选择题A. If he doesn’t come B. If he won’t come C. If he will come D. If he is coming并说出为什么选择这个答案 if he has said that he ( ) come, why should we wait here? A.shan't B.won't C.doesn't D.wouldn't He doesn't think she will come 反义疑问句是does he 还是doesn't he if当是否讲从句时态是什么就是说He doesn't want to tell me if he will come tomorrowHe doesn't want to tell me if he comes tomorrow哪个对 what -------if he doesn't come tomrrowWhat -------if he doesn't come tomrrow?A..you doB.do you doC.will you do D.you will do为什么啊,不是C么? I am waiting for my friend._____,I will go swimming alone.A.If he doesn`t comeB.If he won`t comeC.If he will come D.If he is coming He must be ill,___he doesn’t come to school. -Does Mike tell you if he ______ next Monday?-No,he doesn’t.But if he ______,I’ll give you30.-Does Mike tell you if he ______ next Monday?-No,he doesn’t.But if he ______,I’ll give you a ring.A.will come; comes B.comes; will come C.will come;