重点讲解：
1. used to do sth. 过去常常；过去曾；
He used to be one of the professors at the School of Education.
他曾是教育学院的一名教授uDGlR~;R6kFK*+T1Q。
2. go shopping 购物；
I live just by the market, and it's very convenient to go shopping.
我家就住在商场旁边，买东西很方便FmUw*DSRYeP^*1pt。
3. finish doing sth. 结束；做毕；
After finish reading the book, everyone seems to have a little experience with the exotic trip, experienced a spiritual growth.
看完这本书之后，每个人似乎都随着小作者亲历了一次异国之旅，经历了一次心灵成长之路|0jOfDaZr5zr。
4. from now on 从现在开始；
It's getting colder and colder from now on.
往后的天气越来越冷了1*;Uj^e_C_89X-94o。