Both, Either, and Neither

Both
1. Both
We use both when we are talking bout two things (usually a noun) or the two (the one and the other).
Examples:
• Hendry teaches Math. I teach Math. ---> Both Hendry and I teach Math.
• Regal bookstore is expensive. Fill bookstore is expensive. ---> Both bookstores are expensive.
2. Both of
Both of refers to two persons or things. It always needs the/these/those/my/your/his, etc.
Examples:
• Which of the two pants do you want? ---> I want both of them.
• Both of the bookstores are expensive. (not both of bookstores)
3. Both . . . and . . .
We can join simple statements together into compound sentences.
Examples:
• Mr. Andra teaches Science. He also teaches French. ---> Mr. Andra teaches both Science and French.
• The students were tired. They were also thirsty. --- > The students were both tired and thirsty.


Either
4. Either
We use either when we are talking about one or the other of two.
Examples:
• We can go to Jakarta market. We can go to Bekasi market. ---> We can go to either markets. I don't mind.
• Park on either side of the road.
5. Either of
Either of means one of the two. It always needs the/these/those/my/your/his, etc.
Examples:
• Which of the two do you want? ---> Either of them will go.
• We can go to either of those bookstores.
6. Either . . . or . . .
Example:
• You must take it. I must take it. ---> Either you or I must take it.


Neither
7. Neither
We use neither when we are talking about not one nor the other of two.
Examples:
• Regal bookstore is not expensive. Fill bookstore is not expensive. ---> Neither bookstores are expensive.
8. Neither of
Neither of means not one of the two. It always needs the/these/those/my/your/his, etc.
Examples:
• Which of the two shorts do you want? ---> I want neither of them. (I don't want those shorts.)
• Neither of the bookstores we went to was expensive.
9. Neither . . . nor . . .
Examples:
• Bryan cannot read. He cannot write. ---> He can neither read nor write.
• He does not speak French. She does not speak English. ---> He speaks neither French nor English.
• Sam didn't come to the party. Katty didn't come to the party. ---> Neither Sam nor Katty came to the party.


Notes:
Elliptical sentence (negative)
John doesn't like milk and Chris doesn't like milk.
---> John doesn't like milk and Chris doesn't either.
---> John doesn't like milk and neither does Chris.