as well as,as well,too,also的用法

too和also一般都用于肯定句，too放在句尾，通常用句号隔开，also放在实义动词前，联系动词后。例：He runs fast,too.=He also runs fast. I'm a student,too.=I'm also a student. either主要用于否定句，放在句尾，通常用逗号隔开。例：I don't know it,either. 注意：另外too还有“太..以至于不能.. ”的用法。例：He's too old to go. The lesson is too difficult to understand.

too和also一般都用于肯定句，too放在句尾，通常用句号隔开，also放在实义动词前，联系动词后。例：He runs fast,too.=He also runs fast. I'm a student,too.=I'm also a student. either主要用于否定句，放在句尾，通常用逗号隔开。例：I don't know it,either. 注意：另外too还有“太..以至于不能.. ”的用法。例：He's too old to go. The lesson is too difficult to understand.