also, too, either, as well的区别(在线收听

   这四个副词均可表示“也”,区别如下:

  1. too 和 as well 多用于口语中,语气较轻,通常用于肯定句或疑问句,一般不用于否定句,且通常放在句末。如:
  I like you too [as well]. 我也喜欢你。
  Are they coming too [as well]? 他们也来吗?
  too 有时也紧跟在主语后(注:as well 不这样用),此用法较正式。如:
  I, too, know where he lives. 我也知道他住在什么地方。
  在 Me too, You too 这类简略答语中,通常不用 as well, also。如:
  A:I'm tired. 我累了。
  B:Me too. 我也是。
  2. also 比 too 和 as well 正式,一般也不用于否定句,它在句中的位置通常是紧靠动词,即放在行为动词之前,特殊动词之后。有时为了强调也放在句末(但不常见)。如:
  He also came. / He came also. 他也来了。
  She is young and beautiful,and also rich. 她年轻漂亮,而且有钱。
  also 有时用于句首(其后通常有逗号),相当于连词 and。如:
  Also,his mother was dead. 再说,他母亲又过世了。
  3. either(也)通常只用于否定句,且要放在句末。如:
  I don't know, either. 我也不知道。
  He hasn't finished it,either. 他也还没有做完。
  注:有时在肯定句之后跟一个否定句,可能用 too,also。如:
  He came, but she didn't also came. 他来了,但她没有也一起来。
  He went to Washington, but not to New York too. 他去了华盛顿,但并不是也去了纽约。
  比较:
  He didn't buy a computer, and she didn't either. 他没有买电脑,她也没有买。
  He bought a computer, but she didn't too. 他买了台电脑,但她没有也买台电脑。
  原文地址:http://www.tingroom.com/listen/vocabulary/385250.html