this is a knife复数

答案为:these are some knives. 你的采纳我的动力很高兴能够帮助你

those are knives.希望能帮到你,祝更上一层楼o(∩_∩)o 有不会的欢迎再继续问我(*^__^*)

These are knives.

These are boxes and those are knives.指示代词this that都是单数,应改为复数,this(这)的复数为these(这些),that (那)的复数为those(那些),谓语动词is是单数,应该改为复数are,名词也应该相应地改为复数,所以a就不可以再出现了哦,名词变复数一般在名词后面加“s”,但遇到以x,sh,ch等结尾的要加“es”,遇到以f,fe结尾的要改f或fe为v再加es哦,所以box的复数是boxes,knife的复数形式是knives,如果还有疑问欢迎再提出来哦~~

错,是knives,老师教过的

1.these are photos 2.the boys are playing hide and seek 3.these are flowers in the garden 4.they are birds 5.there are some sheep 希望可以帮助你,

knife的复数是指不止一把小刀.knife 英 [naf] 美 [naf] n.刀;匕首;刃部;手术刀 vt.切割,刺;伤害 vi.劈开;划过 复数: knives

knife复数形式是 knives 因为以fe结尾的名词变复数时先把fe 改为v 再加es,即knives 分析:可数名词的复数变化规则:一、规则变化:1、一般在词尾加s,如:book -

These knives are theirs.祝你学习进步O(∩_∩)O哈!如果对你有所帮助,还望采纳O(∩_∩)O哈!

你好!There are knives仅代表个人观点,不喜勿喷,谢谢.