重点讲解：
1. used to do sth.
过去常常；过去曾；
eg. He used to go for long walks on the moors.
他过去时常在荒野上长时间地散步Eo[xz%5y(2B(P。
eg. He used to crap around like that.
他老做那样的傻事pi5P]ggdXdTQW#NTA。
2. no longer
不再；已不；
eg. Seriously damaged, the bridge is no longer in use.
因受到严重损坏，这座桥不再使用了bY3Sq]I0t!OUyI。
eg. This film ticket is no longer available.
这张电影票不再有效w.+s+O1[,w|D。
3. look down on
蔑视；轻视；小看；
eg. I wasn't successful, so they looked down on me.
我一无所成，所以他们瞧不起我|jjFbPwOjO*gbh9z+0RR。
eg. I wish you wouldn't look down on this kind of work.
我希望你不要看不起这种工作0nO!FzL)U,]3NZ_。
4. no kidding
（表示感兴趣或惊讶）真的吗？
eg. No kidding? That's a real feather in your cap. Congratulations!
真的？那就是你辛苦拼回来的成就呀6+Nr%R(,kx%0V*b。恭喜恭喜！
eg. No kidding! No wonder he doesn't even have time to go on a date.
不会吧！难怪他连约会的时间都没有g.UZQRv6bK)lW。