also，too，either和aswell的用法区别主要是想通过学习他们之间的区别进一步了解either的用法。

Question

also，too，either和as well的用法区别
主要是想通过学习他们之间的区别进一步了解either的用法。

Answer 1

also用在句中（一般放在be动词和助动词之后，行为动词之前）。
she also is good at English.
she also like English.
too 多用于口语，位于句未或句中，只用于肯定句，其前常有逗号。
They are students,too.=They,too,are students.
否定句为They are students,either.
as well 用于肯定句，通常位于句中或句尾。
He knows French,and he knows English as well.