形容词

副词

连词

打电话

Jogging-(慢跑)

Social Security-(社会保险)

1. （表示在两者或多者中择其一）或者，要么
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. The other alternatives are introduced by 'or'.

2. （用于否定句中）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.

3. （两者之中）任意一个
You can use either to refer to one of two things, people, or situations, when you want to say that they are both possible and it does not matter which one is chosen or considered.

4. （用于否定句）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.

5. （用于否定句）也（不），亦（不）
You use either by itself in negative statements to indicate that there is a similarity or connection with a person or thing that you have just mentioned.

6. （用于两个连续否定句的第二句之后，强调两种观点同样重要）而且，还
When one negative statement follows another, you can use either at the end of the second one to indicate that you are adding an extra piece of information, and to emphasize that both are equally important.

7. (两者中的)每个，各方
You can use either to introduce a noun that refers to each of two things when you are talking about both of them.

1. after a negative statement used as an intensive meaning something like `likewise' or `also'

e.g. he isn't stupid, but he isn't exactly a genius either
I don't know either
if you don't order dessert I won't either