重点讲解:
1. used to do sth. 过去常常;过去曾;
例句:It used to cost nothing to visit a museum.
过去参观博物馆是不收分文的 。
2. each other 彼此;互相;
例句:They're constantly at odds with each other.
他们常互相争吵 。
3. as well 也;还;
例句:Tom is very unfriendly to me as well.
汤姆对我也很不友善 。
adj. 传统的