___ important air is to living things! a.what b.what an c.what a d.how

英语选择填空____useful information it is for me! A.What B.What a C.What an D.How 原因是什么？~

选A首先弄清楚感叹句结构，How+adj.+主+谓 What+(a/an)+adj.+n.+主+谓由于what后面要多一个名词，所以首先确定感叹此为what,排除D选项，然后information是不可数名词，不能用a/an修饰，所以选择A选项

选D。
What an important thing it is (to do eye exercise every day)!
括号里是不定式to do起修饰/解释说明作用。
important是元音开头，前面冠词用an
整个句子表强调。那是一件多么重要的事！
it 指代 to do eye exercise every day

耐心详阅：
选【D】How
对于生物，空气是多么重要啊！

【教你以后怎样做这类题】：语法知识——感叹句

一、由感叹词what引导的感叹句。
1.① What+a/an+（形容词）+单数可数名词+主语+谓语！
② What+名词词组+主语+谓语！
如: What a fine day it is!
2. What+(形容词）+可数名词复数或不可数名词+主语+谓语!
如: What kind women they are!
What nice music it is!
二、由How引导的感叹句。（how用来修饰形容词、副词或动词。）
【1.How+形容词（副词）+主语+谓语！】

如: How hard the workers are working!

How clever the girl is!
How quickly the boy is writing!
2. How+主语+谓语！
如：How time flies! 时光飞逝!
三、注意:

1. 当how修饰动词时，动词不跟着感叹词提到主语之前。
如: How fast the runner runs!
2. how与what引导的感叹句中的第一种格式(单数名词)一般情况下可以相互转换，转换后意义不变。
如: What an interesting story it is! = How interesting the story is!
What a beautiful building it is! = How beautiful the building is!
3. 在口语中，感叹句的主语和谓语常常省略。
如: What a nice present!（省略it is）
How disappointed!（省略she is或其它可作本句主、谓的词语）

希望帮助到你！

D
理由：What+不可数名词构成感叹句。
What an+可数名词。
What a+可数名词。
How+形容词。

你好，
翁锦文2为你解答，
如对你有所帮助，
请采纳或给予好评，
如有其他疑问，
可以向我求助，
O(∩_∩)O谢谢

D
how+形容词/副词+主语+谓语
___ important （主语air）（系表结构 is to living things!）

选择a air是不可数 然后这个句子是宾语前置 所以选A

---

长泰县18320274026： 英语的空气air 前面要加the 吗 - ？
祁胡奥尔： 空气属于物质名词,不可数;英语中不可数名词一般不加冠词,但是如果表示特指时就必须加the,请对比:Air is important for life.(泛指意义,不加the) The air in the balloon has been let out.(特指气球里的空气,故加the)

长泰县18320274026： 听短文,完成下面表格.每空一词. Importance      Air is very important to 1______ - . People all over the world are looking for 2_______ to make it ... - ？
祁胡奥尔：[答案] 1. everything 2. ways 3. healthy 4. smoke 5. factories

长泰县18320274026： important的用法 - ？
祁胡奥尔： important 重要的(adj.)important的用法 : It's + adj +(for sb)+to do sth,所以正确的是It's important (for sb) to do sth1. 重要的,重大的[(+to/for)] It is important to see that everything goes well. 重要的是确保一切顺利. It is important to learn to...

长泰县18320274026： 以 important of Fresh Air 为题写一片英语短文(80字)十万火急!!! - ？
祁胡奥尔： Importance of Fresh Air Evidence shows that country people are much healthier than those who live in cities. One of the reasons is that the air there is fresher. The air is clean and fresh in the country. However, in the city, there are a lot of factories ...

长泰县18320274026： 空气对我们很重要的英语作文 - ？
祁胡奥尔： The importance of Fresh AirNo air means death. Although we can't see it, there is air round us.So air is everywhere and it gives life to every living thing. Without it we can't live. Bad air makes people ill.We must have fresh air to keep ...

长泰县18320274026： important的用法 - ？
祁胡奥尔：[答案] important 重要的(adj.) important的用法 : It's + adj +(for sb)+to do sth,所以正确的是It's important (for sb) to do sth 1.重要的,重大的[(+to/for)] It is important to see that everything goes well. 重要的是确保一切顺利. It is important to learn to ...

长泰县18320274026： 英语二选一选择题.Air and water ( ) important.【is;are】 - ？
祁胡奥尔： 选are,因为air和water是两样东西

长泰县18320274026： 简·importan 啥意思?？
祁胡奥尔： important a. 1. 重要的,重大的[(+to/for)] It is important to see that everything goes well. 重要的是确保一切顺利. It is important to learn to communicate. 学会沟通思想很重要. 2. 地位高的,有权力的 He is an important official in the government. 他是政府的要员. 3. 狂妄自大的 He has an important air about him. 他显得盛气凌人.

长泰县18320274026： important的意思,音标 - ？
祁胡奥尔： important: [ im'po:tənt ] adj. 重要的 词形变化: 副词:importantly 例句与用法: 1. She was clearly an important person.她显然是个有影响的人. 2. It's not as if he was very important in the company hierarchy.他在公司的领导层中似乎无多大权...

长泰县18320274026： 英语翻译 :空气对于我们很重要 - ？
祁胡奥尔： 你好,很高兴为你解答,答案如下:The air is very important to us 希望我的答案对你有所帮助.