jack may not come to the party,because he said nothing about the party.为什么要用may,不可以用need的吗?

jack may not come to the party,because he said nothing about the party.为什么要用may,不可以用need的吗? The doctors will operate if it proves necessary-but it may not come to that.中文翻译 用所给词适当形式填空jack ( ) (not) want to join the art clubMay I use your dictionary Sorry,you may not.May I use your dictionary Sorry，you （ ）A can't B may not C don't Don't forget to come to dinnerA,Idon't B Iwon't C.I can't D.I may not 1.___b____,we were not going to make any concessions to his unreasonable demands.a.What may come b.Come what may c.May what come d.What come 2.Heat does not travel by convection in solid,because the solid does not move,__c____.a.so does a liquid b.so people _____ different countries may not be able to understand each other. 答案上是A 为什么啊?people _____ different countries may not be able to understand each other.A.from B.come C.come from D.with may l come to () her tomrrow afternoon tom___ come to the party tonight.i'm not sure.A.can B may C must D will The doctors will operate if it proves necessary,but it may not ____ this.come to 为什么 ---Must I come at four o'clock?--No you ---.A .may not B.don't have to wants come Jack to China him to 连词成句 hello,____ Bill speaking May I speak to Jack We lost our way in the forest.Worse still,night began to fall.He may be late or,worse still,be may not come at all. A:May I_______ the table?B:No,you may not._________everything on your plate.A:You must come to the English Evening on time.B:Yes,________ _________. -If John does not come to work on time,he may be fired.-Surely he isn't so foolish as not to realize that.怎么翻译? ( )----Has May come?-----_____.Shall I go and ask her to come?A.Yes,he has B.Not yet C.Yes,he doesD.No,he doesn't Did mary come to the party I do not know .she_wh-Did Mary come to the party I do not know .she_while I was out.-I do not know .She _while I was out.A.may have come B must have come C might come D could come为什么不用D ( )( ) Jack come to school because he is ill