摘要：She doesn't want to go, and I don't want to go, either.她不想去，我也不想去。

1. 做代词和形容词，表示“两者之一”或“两个中的每一个”。

修饰名词为形容词，单独做主语、宾语、同位语为代词：

Either door leads to the garden.两扇门都通往花园。

There are big trees on either side of the road. 路的两边都有大树。

Either of the answers is incorrect.

这两个答案中的任何一个都是错的。（注意主谓一致）

I don't know either of them. 他们中的任何一个我都不认识。

2. 做副词，表示“也（用于否定句）”：

I don't like it, either.我也不喜欢。

She doesn't want to go, and I don't want to go, either.她不想去，我也不想去。

3. 做连词，表示“或者……或者……”或“要么……要么……”：

Either you or I will go to the meeting.要么是你去开会，要么是我去。

You can either call me or send me a message.

你可以给我打电话，或者给我发信息。

Either he will come early, or we will leave without him.

要么他早点来，要么我们不等他直接走。

Either John or Tom is coming.不是约翰就是汤姆要来。

Either you come with me, or I will go alone.要么你和我一起去，要么我自己去。

来源：惠惠课堂