1、also 一般放在肯定句中,位置是在be动词、情态动词和助动词之后,实义动词之前,有时为了强调,也可以放在句首。
例如:
He is also a good and healthy boy.他也是一个既善良又健康的男孩。
We can also go to the Tom's birthday party.我们也可以去参加汤姆的生日派对。
My friend has also had the chicken and salad.我的朋友也吃了鸡肉和沙拉。
You also need a pair of trousers in blue for school.你也需要一条上学穿的蓝色裤子。
Also, you must come to my home, of course.当然,你也必须来我家。

2、too常放在肯定句句末,前必须有“,”把它和前面的句子分开。
例如:
Tina is a nice girl, and Jane is a nice girl, too.缇娜是一个漂亮的女孩。简也是一个漂亮的女孩。
My father can draw pictures well, me too.我爸爸画的画好,我也是。