请问 None of us is afraid of difficulties是什么意思?

请问 None of us is afraid of difficulties是什么意思? None of us is a student None of us are students 两条都对吗 None of us是单数还是复数None of us_______(are/is) bad student(s). If there is no air, none of us can live.(改成同意句)None of us can live ____ _____. None of Us is As Good As All of Us如何翻译 None of us is a dentist.改肯定句 ___ of us ______ dentists. 帮我翻译下：None of us is afraid of difficulties中文怎么翻译呀 求英文翻译：None of us is afraid of difficulties谢谢啊! None of us is interested in football.为何用is不用are None of us can live on the earth.There is no air.用if写句子 None of us is perpect,nor can we ever be perfect翻译成中文是什么意思 None of us is perfect.我们谁也不是完美无缺的.改成we aren't perfect. None of us is hungry.改为同义句.______of us_____ ______ none of us likes poiiution 的意思 none of us likes pollution 英译汉 None of us like music.的意思 none of us know our exam r____ no.none of us has been abroad.