Unit 21.生活就是选择。2.又恨又爱3.情绪很好/不好8.归根到底，基本论点Life is all about choice.Love to hateBe in a good/bad mood The bottom line be in the mood for（doing）sth./to do sth.“有做某事的心情或兴致”他没没心思说笑话。He is not for .=He is not to .in the moodin the mood（telling）jokestell jokes4.修饰不定代词的定语后置正面的事,让人振奋的事 Something positive重要的事Something important新鲜的事Something new5.used to used to do sth.过去常常做某事 be used to doing sth.习惯于做某事 be used to do sth.被用来作Eg：he is not what he used to be.他已经不是以前的他了。There used to be a bus stop in that co
