too与as well 区别Americans drink lots of coffee,they drink tea,

too
too,also,as well：都用于肯定句,表示前者怎样后者也怎样.
too：一般放在句尾,可用逗号和前面的句子隔开,也可不用；
also：其位置大多放在be动词、助动词、情态动词之后,实义动词之前；
as well：其位置一般放在句尾,三者可以作同义句转换.例如：
You need to go shopping and I need to go shopping,too.
=You need to go shopping and I also need to go shopping.
=You need to go shopping and I need to go shopping as well.

填too,too用语句尾，as well用语句中

too吧
as well感觉前面不加那个逗号

as well 与too意思相同，同时也相当于also和in addition to，但是too在口语中比as well用得更加广泛。另外，as well几乎总是用在句末，而too除用在句末外，也可以用在所修饰词语之后。如：
I like folk music. I write my own songs and I play the guitar as well. 我喜欢民族音乐。我写自...