• n. 英语字母表的第一个字母;学业成绩得优者;表示“最好”的符号



A is the first letter of “apple”. 名词

I have a pen. 冠词

Apple begins with (an) A. 名词

三、from A to Z的意义类似于 from the beginning to the end.

BrE /eɪ/ ; NAmE /eɪ/
(also a) (plural As, A’s, a’s BrE /eɪz/ ; NAmE /eɪz/ )
1 [countable, uncountable] the first letter of the English alphabet 字母表的第一个字母

‘Apple’ begins with (an) A/‘A’.

2 A [countable, uncountable] (music) the 6th note in the scale of C major C大调音阶中的第6个音

3 [countable, uncountable] the highest mark / grade that a student can get for a piece of work or course of study  学生在一项工作或一门课程中所能得到的最高分数或等级

  • She got (an) A in/for Biology.
  • He had straight A’s (= nothing but A’s) all through high school.

4 A [uncountable] used to represent the first of two or more possibilities 用于表示两种或两种以上可能性中的第一种

  • Shall we go for plan A or plan B?

5 A [uncountable] used to represent a person, for example in an imagined situation or to hide their identity 用来表示一个人,例如在一个想象的情境中或用来隐藏他们的身份

  • Assume A knows B is guilty. 假设A知道B有罪。
1 [countable, uncountable] the first letter of the English alphabet

2 [countable, uncountable] the sixth note in the musical scale of C major or the musical key based on this note

3 [countable] the highest mark that a student can get in an examination or for a piece of work 

  • I got an A in French. 
  • Julia got straight A’s (=all A’s) in high school.

 A level

4  an A student5 [uncountable] used to refer in a short way to one of two different things or people.  You can call the second one B 

A demands £500, B offers £100.

 plan A

6  from A to B  from one place to another   

  • get/go from A to B 
  • Hiring a car was the best way to get from A to B.

7 from A to Z describing, including, or knowing everything about a subject 

  • the history of art from A to Z

8 [uncountable] a common type of blood

1.N-VAR 可变名词英语字母表的第1个字母 A is the first letter of the English alphabet.
2.N-VAR 可变名词C大调音阶中的第六音;A音 In music, A is the sixth note in the scale of C major.
3.N-VAR 可变名词(作业、考试等)甲等,优等 If you get an A as a mark for a piece of work or in an exam, your work is extremely good.
4.(用于首字母为 a 的一些单词的缩写,如 acceleration,ampère和answer) A or a is used as an abbreviation for words beginning with a, such as ‘acceleration’, ‘ampère’, or ‘answer’.
5.PHRASE 短语从一处到另一处;从甲地到乙地 People talk about getting from A to B when they are referring generally to journeys they need to make, without saying where the journeys will take them.

【搭配模式】:PHR after v
  • Cars are for getting people from A to B in maximum safety.


or A /ˈeɪ/
plural a’s or as or A’s or As
: the first letter of the English alphabet英语字母表的第1个字母

: a musical note or key referred to by the letter A : the sixth tone of a C-major scale*A音(C大调音阶的第6音或音符);A调

3 [count] : a grade that is given to a student for doing excellent work(学业成绩)第一等,优秀

[noncount] — used to refer to the first of two or more people, places, or things that are being considered(正在考虑的人、地点或事物中的)第一个,甲

from A to Z

: including everything从头到尾;全部

from (point) A to (point) B

: from one place to another从一地到另一地

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