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Change is not necessary to life,it is life It is not necessary to do this work```! It is necessary for us not to eat fast I think it is not necessary.还是I do not think it is necessary啊那一句对啊 it is not necessary a bad thing.麻烦解释一下句子的结构 ,为什么是用necessary而不是necessarily? it is not necessary true of everyone.这句话的意思是什么?it is not necessarily true of everyone 英语翻译给我翻译：What is said now is all not real?Is it necessary to have not cheat?急用, be necessary for same it friends the not is to 连词成句 It is not necessary to understand things in order to argue about It is not necessary to have a new building in our school.的同义句 it is not necessary to be a great scientistmake a difference3Q The happiness is not necessary.Just see how you look on it. An optimistic attitude is not a luxury ,it's a necessary 这句话有什么错误? 翻译it's not necessary to hurry It's not necessary _________________(相同的) if it is necessary /if necessary /when it is necessary 意思一样吗 hardship experience is not necessary 英文辩论 when it is necessary 为什么可以变为when necessary?