1. Too
位置：置于句尾
放入肯定句
1. 句尾： Daniel is a doctor. Paul is a doctor, too.
2. 句尾： Amy can speak fluent English. Rose can speak fluent English too.
3. 句尾：Frank studies hard. Sam studies hard, too.
(三者皆为肯定句)
2. Also
位置：置于 be 动词、助动词后面，一般动词前面
放入肯定句
1. be 动词前： Daniel is a doctor. Paul is also a doctor.
2. 助动词后、一般动词前： Amy can speak fluent English. Rose can also speak fluent English.
3. 一般动词前：Frank studies hard. Sam also studies hard.
(三者皆为肯定句)
3. Either
位置：置于句尾
放入否定句
1. 句尾：Daniel is not a doctor. Paul is not a doctor, either.
2.句尾：Amy can not speak fluent English. Rose can not speak fluent English, either.
3.句尾：Frank does not study hard. Sam does not study hard, either.
(三者皆为否定句)
这样大家对于三者的差别有没有比较清楚了呢？
最后，附上小测验的答案：
1. too
2. also
3. either
4. also
