How much does it cost?这句中的does 为什么不直接How much it cost?或者How much is it cost?可以吗

来源：学生作业帮助网编辑：作业帮时间：2024/05/13 03:16:53

How much does it cost?
这句中的does
为什么不直接How much it cost?
或者How much is it cost?可以吗

疑问句一般需要助动词提前.how much it cost?这句话缺少助动词.特殊疑问句的结构是特殊疑问词+一般疑问句.一般疑问句都是动词提前.有系动词或情态动词的,把系动词或情态动词提前.没有的,前面加上助动词do.助动词也有人称,数,时态的变化.
另外,how much is it cost?也不对.
一般现在时态表示的是目前的状态或动作.一般表状态用系动词be,系表结构作句子谓语.cost是实意动词,不能表状态,所以这句话是错的.

助动词 ···英语里面有讲的

句中不能没有动词!

这两个句子都有语法错误。
第一个，特殊疑问句的结构是：特殊疑问词+系动词/助动词+主语
How much it cost？这个句子里的动词是cost，实意动词变疑问句，必须借助助动词才可以，又因为主语是it，所以助动词只能用does。
How much is it cost? 这个句子里，既有系动词，又有动词原形。一个句子里，不可能同时出现这两个，否则句子有语病。
...

全部展开

收起

how much does it cost还是how much does it? How much does it cost___bus? How much does it c()? How much does it cost=什么 how much does it 同义句是什么? 有how much does it weigh 那么有 how much does it high 为什么是how much does it weigh 而不是how many.. how much does it _to buy it填什么 how much does it cost?为什么是how much 不是how many how much does it cost 可不可以用how much is it cost? How much is it going to cost和how much does it cost有什么区别? I asked the clerk at the post office__a.how much does it costb.how much did it costc.how much it costd.how much it costed how much does it cost?的另一种表达方式 How much does it cost to become a moth. how much does it cost busa atb onc by 括号内填什么How much does it cost ()bus? How much does it cost?(同义句） How much does it < How much does it < about 3 years A spent B cost C take D pay