用于肯定句中，通常置于动词前，与 be 动词、助动词连用时则置于其后。
She also went away.
He was also wrong.
作为 too 的否定形式，常用于否定句中，且必须放在句末。试比较：
He can sing and dance, too.
He can't sing, or dance either.
I like the film, and she likes it, too.
I don't like the film, and she doesn't, either.
通常用于肯定句中，置于句末，在正式用法中 too 之前常用逗号隔开。
I'm going, too.
These people came from all over Europe and America, too.
It's a more beautiful dress and it's cheaper, too.
They've also slashed state subsidies to utilities and transportation.
I also had friends who gave me a great deal of encouragement
The President's political advisers also weighed in on the plan
She has a reputation for brilliance. Also, she is gorgeous.
He also deleted files from the computer system
They also stress the need for improved employment opportunities, better transport and health care