1、1objective adj. 客观的2observe v. 观察；遵守；庆祝；评述3obtain vt. 得到4occasion n. 时机，场合5occupation n. 占领；工作；消遣6occupy v. 占领；使从事7offence n. 冒犯；违法行为；讨厌的事物8opportunity n. 机会，时机9oppose vt. 反对，使相对10opposite n. 对立面，相反的人或物adj. 对面的，相反的，对立的11optimistic adj. 乐观的12option n. 选择，可选择的办法；配件13optional adj. 可选择的；非强制的14origin n.
2、来源，出身15outgoing adj. 开朗的，对人友好的16outline n. 提纲，概要，轮廓17output n. 产量，输出18outspoken adj. 坦率的，直言的19outstanding adj. 杰出的；未解决的20overcome v. 战胜，克服1for pleasure 为了取乐，为了消遣Its a pleasure/my pleasure. (用于对别人的感谢)别客气/没什么。take pleasure 以为乐，喜欢with pleasure 愉快地，高兴地；十分愿意地2call at(some place) 拜访(某地)call back 回电话call f
3、or (公开)要求，需要call in 要求退回，召来call on 邀请，请求call up 使回忆起，使想起call off 取消，停止进行1prevent.(from) doing sth.“阻止做；不让做”What can we do to prevent the disease spreading?我们能做什么来防止这种疾病的蔓延呢？2It remains unknown.“现在仍然不知道”It remains unknown whether the graduates can find satisfying jobs.现在仍然不知道这些毕业生是否能找到满意的工作。3I think
4、it is of great significance to do.“我认为做非常有意义”I think it is of great significance to do voluntary work.我认为从事志愿者工作非常有意义。语言学习(Language learning)(1)(2015高考四川卷)假如你是李夏。你看到美国留学生Sharon在网上发帖，希望有人能帮助她提高普通话(Mandarin)水平，她可以教英语作为回报。请根据以下提示用英语给她写一封电子邮件。1表达给她提供帮助的意愿；2说明你能胜任辅导的理由；3给出讲好普通话的两点建议；4提出你学习英语的具体需求。注意：1词数1
5、20左右，开头语已为你写好；2可以适当增加细节，以使行文连贯；3文中不得透露个人姓名和学校名称。Hi，Sharon，This is Li Xia.I learned from your post that you want to improve your Mandarin._Li XiaOne possible version：Hi，Sharon，This_is_Li_Xia.I_learned_from_your_post_that_you_want_to_improve_your_Mandarin.I am willing to help you with your Mandarin.As
6、 a native Chinese speaker，I can speak Chinese clearly and fluently，and my teachers think highly of my spoken Chinese.I have taught some foreigners Mandarin，which makes me have much experience in teaching.As for speaking Mandarin，its better to pay much attention to the pronunciation.Besides，you must
7、take notice of the handwriting.And you also should keep it in mind that comparing notes with your classmates frequently is a good way to improve your study.In return，I hope you can help me with my spoken English.When I speak English，I often feel a little nervous.Can you give me some advice on how to overcome that? Looking forward to hearing from you.Li_Xia