27) too，also與either

1.too用于肯定句和疑問句，一般放在句尾，其前常加逗號。如：

We are in the same school, too. 我們也在相同的學校。

Do you play soccer every day, too?你也每天踢足球嗎?

2.also用于肯定句和疑問句，一般位于實義動詞前、be動詞后。如：

Sandra is also a Korean student.Sandra 也是一個韓國學生。

3.either用于否定句，一般放在句末。如：

They don’t know the answer, either.她們也不知道答案。

4.as well as也有"也"的意思。如：

We have great mushroom pizza as well as soda.

He is a happy boy as well.