重要

either

🇬🇧/ˈaɪðə(r)/ 🇺🇸/ˈiːðər/📚 2036 311 5中考高考
You use either in front of the first of two or more alternatives, when you are stating the only possibilities or choices that there are.与(or)连用,表示几个可选项中只能选其一

conjunction [并列连词]或者,要么;两者都(不),既(不)

You use either in a negative statement in front of the first of two alternatives to indicate that the negative statement refers to both the alternatives.
用于否定句中,表示“两者都不”

pronoun [指示代词](两者之中)任意一个;两者都(不)

You use either in a negative statement to refer to each of two things, people, or situations to indicate that the negative statement includes both of them.
用于否定句中,表示“两者中任何一个都不”

adverb [方式副词]也(不),亦(不);而且,还

Don't agree, but don't argue either.
不要赞同,但是也不要争辩。

adjective [原级](两者中的)每个的,各方的

...a special Indian drug police that would have the authority to pursue suspects into either country. …
有权到这两国中任意一国追捕嫌犯的一位印度缉毒特警。

either 出现在下面的课文中(提供视频、音频及笔记等可系统性学习)
Lesson 049&50 At the butcher’s either 副词: 也(用于否定句)
Lesson 113&114 Small change either 副词: (两者之中)任意一个
Lesson 079&80 Carol’s shopping list
Lesson 107&108 It’s too small
Lesson 48 Did you want to tell me something?
Lesson 12 Life on a desert island
either

adj. 两者之中任一的;两者之中每一的

单词造句:
网友用“Either”造句精选
There had been no indication of either breathlessness or any loss of mental faculties right until his death. 直到去世,他既没有出现呼吸困难也没有脑功能丧失的迹象。
There were glasses of iced champagne and cigars. Unfortunately not many of either were consumed. 有很多杯冰镇香槟和雪茄。可惜两样东西中哪一样都没被受用多少。
Do either of you smoke or drink heavily? 你们俩当中有谁抽烟、喝酒凶吗?
...a special Indian drug police that would have the authority to pursue suspects into either country. …有权到这两国中任意一国追捕嫌犯的一位印度缉毒特警。
She warned me that I'd never marry or have children.—"I don't want either." 她警告我说我永远不会结婚、生孩子。—“我哪一样都不想要。”
There are no simple answers to either of those questions. 对那两个问题哪一个都没有简单的答案。
He sometimes couldn't remember either man's name. 他有时候这两个男人谁的名字都记不起来。
He did not even say anything to her, and she did not speak to him either. 他甚至什么都没跟她说,而她也没跟他说话。

either的重要知识点

Also 也,此外用法: 常用于肯定句中,表示“此外”、“另外”,通常放在动词前面(实义动词前,助动词或情态动词后),或者主语之后,也可以放在句首连接句子。
She is a doctor, and she also teaches at the university. 她是一名医生,她也在大学教书。
Also, I'd like to thank my family for their support. 此外,我还要感谢我的家人对我的支持。
Too 用法: 常用于肯定句句末,表示“也”、“同样”,语气比较随意。
I like pizza, and I like pasta, too. 我喜欢披萨,我也喜欢意大利面。
Nice to meet you. Nice to meet you, too. 很高兴认识你。我也很高兴认识你。
Either 也(不)用法: 专门用于否定句句末,表示“也不”。在否定句中,不能用 alsotoo
I don't like coffee, and she doesn't like it, either. 我不喜欢咖啡,她也不喜欢。
He won't come to the party, and I won't go, either. 他不会来参加派对,我也不会去。