重点讲解：
1. used to do
过去常常；过去曾；曾经；
eg. I feel more compassion and less anger than I used to.
我觉得自己比过去多了些同情，少了些怒气@!(f-VdzmEaC#!。
eg. People used to come and visit him every day.
人们过去每天都来拜访他;2[84_FU;W.t5U。
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;cEQWqqn*xGXrK#J)|。
2. different from
和……不同；异于；
eg. She believes that she has a fight to be herself and to be different from what others might expect of her.
她相信她有权走自已的路，而不是别人指望她怎么样，她就怎么样betlV=2reyNty[iGZ。
eg. American English is significantly different from British English.
美国英语与英国英语有很大差异@#BaEWa,S-N。
eg. While choosing partners, people seem to be attracted easily by the person whose genes are too different from themselves.
人们在选择伴侣时，更容易被与自己基因差异大的人吸引Xnk9XNy6;V^7k;M。