Use of the wrong Grammar

Using also or too in a negative sentence instead of either.

Don’t say: Joe hasn’t come also.

ü  Say: Joe hasn’t come either.

Remember: Change also or too into either in a negative sentence.

Use of the wrong Grammar

Using any for two, instead of either.

Don’t say: Any of these two books is good.

ü  Say: Either of these two books is good.

Either means one or the other of two; any means one of three or more.