1、优质文档优质文档noise/voice/sound1、noise/voice/sound这三个词均指“声音”voice 是可数名词，指人发出的声音。如：I didnt recognize Johns voice on the telephone. 在电话里我没听出约翰的声音。We could hear the childrens voices in the garden. 我们能听见花园里孩子们的声音。sound 词意最广泛，它包括各种性质的声响，不论大声还是小声，音乐或噪音，有意义的还是无意义的声音均可，多作可数名词。如：A joyful sound came from the distan
2、ce. 远处传来欢快的声音。 来源:Zxxk.ComThe door was open, and the sound came from the kitchen. 门开着，声音是从厨房传来的。noise 泛指一切在的、杂乱的或令人讨厌的杂声和吵闹声，既指单一的刺耳、尖锐、磨擦的声响，也可指混合在一起不协调的声响，不论是由人或物所发出的，可以是可数的，也可以是不可数的。如：Loud noise can make people ill. 大的噪音能使人生病。Dont make such a loud noise. 别弄出这么大的 声响。2、necessarynecessary 主要用于两种句型：I
3、ts necessary for sb. to do sth. 某人有必要做某事Its necessary that 有必要注意：that 从句中谓语用 should + 动词原型，should 可省略。优质文档优质文档另外：不能使用 sb. is necessary to do 结构，因为通常是“某事或做某事有必要”，而非人有必要。来源 :学科网 ZXXK误：He is necessary to return home this afternoon.正：Its necessary for him to return home this afternoon.应用汉译英他有必要改进自己的学习方法
4、。有必要的话，我们可以多雇几个人收庄稼。Key:Its necessary for him to improve his method of study。/Its necessary that the should improve his method of study。来源: 学_科_网If necessary,well employ more men for the harvest.3、常见的总括词有：both/all/every/everyone/everybody/everything/everywhereNot all of them go in for sports. 他们并不都喜
5、欢运动。相当于：All of them dont go in for sports.或：Some of them go in for sports,but others dont.I dont like both of the novels. 这两部小说我并不都喜欢。相当于:I like only of the novels.来源: 学。科。网 Z。X。X。KYou cant get this kind of vegetables everywhere. 这种疏菜你并不是在哪里都能买到。相当于：You can only get this kind of vegetables somewhere.来源:Z|xx|k.Com优质文档优质文档如果表示全部否定则应用：neither(两者)/none(多者)/no one/nobody/nothing/nowhere.None of them go /goes in for sports. 他们都不喜欢运动。I like neither of the novels. 这两部小说我都不喜欢。You can get this kind of vegetables nowhere. 在哪里你也买不到这种疏菜。
