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。
eg. People used to come and visit him every day.
人们过去每天都来拜访他。
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。
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。
eg. American English is significantly different from British English.
美国英语与英国英语有很大差异。
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。
