too放在肯定句的句末,
also放在肯定句的主语后面,
either 和neither在否定句 ,either也在句末,neither一般用在倒装句
(1)either用作“也”时是副词,常用于否定句句尾.
She is not a Japanese,I’m not,either.她不是日本人,我也不是.
My sister doesn’t like this song,either.我妹妹也不喜欢这首歌.
(2)too常用于肯定句或疑问句尾,表示“也”.
He likes China,too.他也喜欢中国.
Are you in Grade 3,too?你也在三年级吗?
(3)also也常用于肯定句或疑问句,但一般位于句中.
We are also students.我们也是学生.
He also went there on foot.他也是走着去的.
Did you also want to have a look?你也想看看吗?