either

定義

1. 限定詞

   One or the other of two things.

   例文

   • You can have it in either color.
   • Either option would work for me.
2. 限定詞

   Both of two, each.

   例文

   • There is an engine at either end of the train.
   • There are roses on either side of the garden.
3. 限定詞

   Any one of more than two things.

   例文

   • Choose either of the three seats.
   • Will either of these work for you?
4. 代名詞

   One or the other of two people or things.

   例文

   • He made me two offers, but I did not accept either.
   • I like both cakes, so I will take either.
5. 代名詞

   In old use, each of two or more.

   例文

   • Hardly any ground could be taken by either of the three.
   • Either of them promised to protect the other's honor.
6. 副詞

   Also, used in negative sentences.

   例文

   • I do not like him, and I do not like her either.
   • It is not far from here, either.
7. 接続詞

   Used with or to show two choices.

   例文

   • Either you eat your dinner or you go to your room.
   • You can have either potatoes or rice, but not both.